Why solving for your most difficult customer is the smartest way to capture the mass market.

I was staring at a restaurant menu the other day when a simple logical statement popped into my head. It wasn’t about the food, strictly speaking; it was about the logic behind the food.

“All vegans are vegetarians, but not all vegetarians are vegan.”

On the surface, it’s just a statement of fact. It’s a definition. But if you strip away the dietary context and look at it through a business lens, it’s actually a profound lesson in strategy, market segmentation, and the counter-intuitive power of constraints.

Bear with me for a moment while I unpack the logic.

Imagine you are hosting a dinner party. You have a mixed group of friends: some eat anything, some are vegetarian, and one is strictly vegan.

If you decide to cook a classic vegetarian lasagne, stacked high with mozzarella and creamy béchamel sauce, you have satisfied the vegetarians. You have also likely satisfied the meat-eaters (who doesn’t love cheese?). But you have completely alienated the vegan. That dish is a “no-go.”

However, if you decide to cook to the stricter constraint, a fully vegan lasagne using high-quality vegetables and a plant-based sauce, something interesting happens. Obviously, the vegan can eat it. But so can the vegetarian. And so can the meat-eater.

By adhering to the strictest set of rules, you haven’t limited your audience; you have actually maximised it.

In mathematics, this is Set Theory. The “Vegan” market is a subset of the “Vegetarian” superset. A product that solves for the subset automatically solves for the superset. But a product that only solves for the superset is locked out of the niche.

“In the business world, we are constantly told to ‘cast a wide net.’ We are often warned that a focused Niche Market Strategy limits our growth because it shrinks our Total Addressable Market (TAM).” But this logic suggests the exact opposite. It suggests that by designing your product or service around the most difficult, demanding customer (the Vegan), you don’t just win their loyalty, you create a “universal” product that is robust enough to serve everyone else, too.

This is the “Vegan Strategy”: the idea that strict constraints don’t shrink your market, they validate it.

Jargon Buster: Total Addressable Market (TAM) In the MBA textbooks, TAM is just a fancy acronym for “how many people could theoretically buy your stuff.” It’s the size of the pie. The conventional wisdom usually screams that if you add constraints, your TAM shrinks—that by focusing on a niche, you are voluntarily walking away from the majority of the market. But the logic we are exploring here flips that on its head. Because the “Vegan” product (the subset) works perfectly well for the “Vegetarian” customer (the superset), your TAM doesn’t actually shrink. In fact, it becomes higher quality. You secure the high-value niche without losing your passport to the mass market. It is one of those rare moments in business strategy where zooming in is actually the smartest way to sell out.

The “Lowest Common Denominator” Fallacy.

The problem is that most businesses are terrified of the edge case. In the boardroom, the logic usually follows a different path: “If we make this product too specific, we’ll alienate 90% of people who don’t care about those specifics.”

So, they aim for the “Vegetarian” standard. They try to find the lowest common denominator, a product with just enough features to satisfy the average user, but few enough constraints to keep costs down and production easy. They want to be the broad, accessible middle ground.

We see this everywhere. The software company that builds a generic tool, trying to please HR, Sales, and Finance, but ends up being clunky for all of them. The consultancy that claims to specialise in “Strategy, Operations, and Digital Transformation” for “all sectors,” but offers no real deep expertise in any of them.

“This is the ‘Generalist Trap.’ Unlike a bold Niche Market Strategy, trying to be good for everyone usually means you end up being perfect for no one. You become a commodity.”

But here is the counterintuitive truth: Excellence flows downwards.

When you solve a problem for the most demanding customer (the Vegan), you are inadvertently solving it for the less demanding customer (the Vegetarian), usually in a way that delights them.

Think about the “dropped kerb” on a pavement. Originally, this was an engineering constraint designed for a specific, “niche” subset of the population: wheelchair users. It was a strict requirement. But once installed, who benefits? Parents with prams, cyclists, delivery drivers with trolleys, and travellers with rolling suitcases.

The strict constraint created a better experience for the general population.

In business, I call this the “Free Upgrade” effect. When a customer buys a product designed for a stricter standard than they actually require, they don’t feel alienated; they feel reassured.

If I buy a watch designed for deep-sea divers (a strict “Vegan” constraint), I am probably never going to take it below three metres of water in a hotel pool. But I buy it because that over-engineering guarantees it won’t break when I wash the dishes. The constraint signals quality. The “niche” feature becomes a universal value proposition: durability.

By building for the “Vegan,” you aren’t ignoring the “Vegetarian.” You are giving the “Vegetarian” a product that is vastly superior to the one designed specifically for them.

Real World Example: The Modular Building Paradox

Let’s take this out of the abstract and look at a gritty, bricks-and-mortar industry: Modular Buildings. You know the type: the portable cabins you see stacked up on construction sites or acting as temporary classrooms.

In this world, the distinction between “Vegetarian” and “Vegan” is the difference between “Temporary” and “Permanent.”

The vast majority of the hire industry takes the “Vegetarian” approach. They build standard “site accommodation.” These units are designed to be cheap, cheerful, and functional. They have thin walls, basic insulation, and a design life of maybe 10 or 15 years.

This strategy works fine if you are renting to a building site for six months. But it has a hard limit. These units do not meet the strict Building Regulations (Part L) required for permanent residency. You cannot legally use a standard site cabin as a permanent hospital ward or a long-term school block. The “Vegetarian” fleet is locked out of the high-value “Vegan” market.

But I’ve seen a few smart operators flip this logic on its head.

They decided to adopt a “Vegan Strategy.” They made a strategic choice to build every single unit in their fleet to Permanent Dwelling Standards.

This means thicker steel, high-grade insulation, sophisticated fire compliance, and a 60-year structural lifespan. It is a massive constraint. It makes the design process harder and the production line more exacting.

But look at the market fluidity this creates.

Firstly, they dominate the high-end niche. When the NHS needs an overflow ward that feels like a real building, or a school needs a new English block that won’t freeze in winter, these guys are the only option. They win the business that the “Vegetarian” competitors can’t even bid for.

Secondly, and this is the genius part, they can still walk through the door to the broader market.

They can take that same high-spec, compliant module and rent it to a construction site.

Imagine the sales pitch to the Site Manager. You are competing against the standard “tin box” provider. You say: “Look, for roughly the same hire rate, I’m going to give you a classroom-grade suite. It holds its heat, so your energy bills will be half of what you’re used to. It’s quieter, safer, and your staff won’t feel like they’re working in a shed.”

The Site Manager is getting a “Free Upgrade.”

The “Vegetarian” competitor is now stuck. They are fighting a war on two fronts. They are locked out of the permanent market by regulation, and they are being beaten in the temporary market by a competitor offering a superior product.

By adhering to the stricter standard, the “Vegan” builder runs a single, highly utilised fleet that can go anywhere. They have simplified their inventory while expanding their Total Addressable Market.

Service Strategy: The Sparky Who Feared No Voltage

This logic applies just as powerfully to services as it does to products. Let’s look at the electrical trade.

In the world of “sparkies,” the “Vegetarian” strategy is the generalist. This is your typical electrical contractor who does a bit of everything: domestic rewires, office fit-outs, maybe some light industrial work. They follow the wiring regulations (BS 7671), they are competent, and they get the job done.

But they have a ceiling. If a potential client calls and asks for work in a Tier 4 Data Centre, a Petrochemical Plant, or a Hospital Operating Theatre, the generalist freezes. These are “Mission Critical” or “Hazardous Area” environments. The risk profile is too high. A mistake here doesn’t just trip a fuse; it shuts down a global banking network or endangers lives. The generalist lacks the insurance, the specialised accreditation, and frankly, the nerve. They are locked out of the top tier.

Now, consider the “Vegan” strategist in this sector. This is the firm that decides to specialise exclusively in Critical Environments.

Their internal constraints are excruciatingly strict. They don’t just “run a cable.” Every single circuit is designed with redundancy. Every termination is labelled at both ends with forensic accuracy. The paperwork, the Risk Assessment Method Statements (RAMS) and the handover packs are thicker than the manual for the Space Shuttle.

You might think this level of bureaucracy would make them too slow or expensive for the “boring” general market. But the opposite happens.

When a high-end law firm or a hedge fund (a “Vegetarian” client) needs their office rewired, who do they call? They could call the generalist. But the Office Manager knows that if the power goes down during a merger call, heads will roll.

So, the “Vegan” electrical firm walks in and drops its ace card.

“We don’t usually do standard offices,” they say. “Our teams spend their days keeping life-support systems running and servers online. We apply those same ‘Mission Critical’ protocols to everything we touch. We don’t just turn your lights on; we guarantee they stay on.”

The client buys immediately.

Why? Because for the client, the service isn’t just about electricity; it’s about sleep insurance.

The “Vegan” firm justifies a higher margin in a standard market by importing the prestige and reliability of the niche market. They have taken the strictest constraint: “Failure is not an option” and monetised it across the entire customer base.

The Counter-Argument: The “Gold-Plating” Trap.

Now, before you rush off to re-engineer your entire business around the strictest possible standard, we need a reality check. While the statement “All vegans are vegetarians” is a logical truism, business is rarely a place of pure logic. It is a place of economics.

The strategy I’ve outlined above has a fatal flaw if you aren’t careful. It is called “Gold-Plating.”

In the culinary world, a vegan meal might cost 20% more to prepare than a vegetarian one because of the specialist ingredients. In the industrial world, that premium can be significantly higher. And this is where the “Subset Strategy” can fall apart.

The “Vegetarian” customer (the mass market) is rational. They might appreciate the superior quality of the “Vegan” product, but they are rarely willing to pay a 200% premium for features they don’t strictly need.

Let’s go back to our Modular Building example.

If building to “Permanent Dwelling Standards” makes your cabin three times more expensive to manufacture than the competitor’s “site hut,” you have a problem. When you pitch to the construction site manager, they might love the idea of thicker walls and better insulation. But if your daily hire rate is £50 and the competitor is £25, you lose.

The site manager has a budget. To them, your product is “Gold-Plated.” It is over-specified for the job at hand. You are trying to sell a Rolls-Royce to someone who just needs a transit van.

The same risk applies to our “Mission Critical” electricians.

If adhering to Data Centre protocols means that changing a simple lightbulb in a landlord’s hallway takes three days of paperwork and costs £500, you won’t get the job. You have allowed the constraint to become a bottleneck. You have prioritised process over utility.

So, for the “Vegan Strategy” to work, one critical condition must be met:

You must deliver the Specialist Quality at (or near) the Generalist Price.

This is the hard part. This is where the real business genius lies.

The companies that nail this strategy don’t just “decide” to be better; they innovate their operations to make “better” affordable.

• The modular builder invests in robotics so they can weld a heavy-duty frame as cheaply as a competitor rivets a tin one.
• The electrical firm uses software to automate the “heavy” compliance paperwork, so the client gets the safety assurance without the administrative delay.

The goal is to make the strict standard your baseline, not a “special order.” When the cost of excellence becomes marginal, the “Vegetarian” customer will choose you every single time. They get the premium product for the standard price. That is when you stop competing and start dominating.

Future-Proofing: The Regulatory Ratchet.

There is one final, massive advantage to this strategy that often gets overlooked in the quarterly P&L. It’s about longevity. If you look at the history of almost any industry, construction, food, automotive, or finance, you notice a pattern. Regulations operate like a ratchet. They only move in one direction: tighter.

Standards never get looser. Environmental targets never get lower. Health and safety protocols never get more relaxed.

What is considered a “Vegan” constraint today (niche, strict, difficult) usually becomes the “Vegetarian” standard (mandatory, baseline) tomorrow.

• Twenty years ago, a car with an electric hybrid engine was a “Vegan” niche product for eco-warriors. Today, in many cities, you get fined if you don’t drive one.
• Ten years ago, gluten-free labelling was a niche courtesy. Today, it’s a legal requirement for allergen control.

If you build your business strategy around the “Vegetarian” standard, doing just enough to comply with the rules of today, you are building a ticking time bomb.

Let’s look at our modular building fleet again.

If you spent millions of pounds building a fleet of “standard” site cabins five years ago, you felt smart. They were cheap to build and easy to rent. But today, with the introduction of aggressive Net Zero carbon targets and Part L building regulations, that fleet is looking dangerous.

In five years’ time, legislation might ban the rental of poorly insulated units entirely. Suddenly, your “Vegetarian” fleet isn’t an asset; it’s a liability. In finance terms, they become “Stranded Assets”, inventory you can’t use and can’t sell.

Meanwhile, the “Vegan” builder, the one who “over-engineered” their units with 60-year lifespans and high insulation, is sitting pretty. They don’t have to retrofit their fleet. They don’t have to scrap their inventory. They paid a premium up front, but they bought immunity from the regulatory ratchet.

The same applies to the electrical trade. The “Vegetarian” electrician who ignored the rise of smart-home data protocols because “I just do 240-volt wiring” is about to find themselves obsolete in a world of EV chargers and solar battery storage. The “Vegan” specialist who treated every home like a data centre is already prepared for the grid of the future.

The lesson is simple: You aren’t just building to the strictest constraint to win the niche market. You are building to the strictest constraint because that is where the whole market is going to be in ten years.

You are effectively buying insurance against the future.

Final Word: Build for the Edge, Win the Middle.

So, let’s go back to that dinner party.

The host who cooks the vegan meal hasn’t “restricted” their menu. They have simply chosen a standard that includes everyone by default. They have removed the friction of dietary requirements by adopting the strictest one as the baseline.

In business, we spend too much time avoiding a Niche Market Strategy. We try to be the ‘Vegetarian’, aiming for the comfortable middle ground where the volume is high and the rules are loose. We treat constraints as annoyances to be avoided, rather than strategic levers to be pulled.

But the most resilient, profitable, and future-proof businesses I know are the ones that run towards the difficulty.

They find the “Vegan” standard in their industry, whether that is medical-grade hygiene, military-grade durability, or forensic-level data compliance, and they adopt it universally.

Yes, it is harder. Yes, you have to watch out for the “Gold-Plating” trap and ensure your operations are efficient enough to keep the price competitive.

But the reward is worth the risk. You get a single, simplified operational process. You get a defensive moat against future regulations. And best of all, you get to look your “average” customer in the eye and tell them that for the standard market price, they are getting an extraordinary product.

So, here is my challenge to you: What is the “Vegan” standard in your industry?

What is the strict constraint that your competitors are scared of? What is the “edge case” that, if you mastered it, would make you over-qualified for everything else?

Find that standard. Build your business around it.

Because when you build for the edge case, the middle takes care of itself.