Dominate Your Niche

The TAM slide in every pitch deck exists to answer one question: how big could this get? It's the ceiling, the upper bound, and it belongs in that conversation because investors need to know the opportunity is worth their time.

The problem I keep seeing is that founders start treating their TAM as a go-to-market plan. They put "$40B market" on a slide to raise money, and then they actually try to build for that entire market from day one. That conflation – between the size of the opportunity and who you actually serve right now – is where things go wrong.

The beachhead question

TAM tells you how big the prize could be someday. It says nothing about where to start. And "where to start" is the only strategic question that matters pre-PMF.

I think about this as the beachhead question: who is the specific, narrow group of people I can serve so well they become mine? Not "SMBs" – that's millions of companies with nothing in common. I mean something like three-person design agencies managing invoices in spreadsheets. Narrow enough that you can understand their actual workflow, build exactly what they need, and become the obvious choice for that group.

Most founders resist this level of specificity because it feels like making the company smaller. I get the instinct. But what's actually happening when you target a broad market early is that you're making your product worse for everyone in it.

What happens when you build for everyone

I've seen this play out many times. A team is trying to serve startups, agencies, and enterprise customers simultaneously. Each group wants fundamentally different things – the startup wants speed and simplicity, the enterprise buyer wants SSO and audit logs, the agency wants white-labeling. The product roadmap becomes a negotiation between these competing needs, and every feature decision is a compromise.

The result is a product that technically works for several audiences but doesn't deeply serve any of them. It's adequate. And adequate products don't generate word of mouth, don't inspire loyalty, and don't create the kind of pull that makes PMF feel obvious when it's happening.

When I contrast that with what happens when a team picks a niche and goes deep, the difference is striking. Feature decisions become clear because there's one group to optimize for. The team develops real expertise in that segment's problems. And the people they're building for can feel it – this thing was made for them, specifically.

The wedge is the playbook

Most of the iconic tech companies followed exactly this pattern, even if it's not how we remember them now.

Facebook started at Harvard – not colleges generally, one campus. They saturated it, then expanded to other schools, then opened to everyone. Amazon sold books for years before they sold anything else. Slack was a tool built for one internal team at a gaming company.

What these companies understood, whether explicitly or intuitively, is that dominance in a small segment gives you things you can't get any other way. Density of users who talk to each other. Deep understanding of real workflows. A reputation that starts doing your marketing for you. Those are the raw materials for expansion, and they only come from focus.

Earning the right to expand

This is maybe the core insight: addressing a big market isn't something you decide to do. It's something you earn by winning somewhere small first.

When you own a niche, moving into adjacent segments becomes a series of credible steps. "We're the tool design agencies rely on" is a genuinely compelling pitch when you walk into a marketing agency. You have proof, references, and deep understanding of a related workflow. Compare that to showing up as "a general-purpose project management platform" – which is what you sound like when you try to serve everyone from the start.

I've watched founders skip this step because it feels too slow, and then spend twice as long competing on features against incumbents with years of head start and vastly more resources. The shortcut is slower.

Why founders resist this

I don't think the problem is that founders haven't heard the "focus" advice. They hear it constantly. The problem is that narrowing down feels wrong. It feels like leaving money on the table, like artificially constraining the company's potential.

But the actual choice isn't between a small market and a big one. It's between a small market where you can build something people genuinely care about, and a big market where you're another option in a crowded field. The TAM is real – it's just not where you start.