Dr. Thomas J. PowellEntrepreneur | International Financier | Doctor of Law & Policy | Lifestyle Enthusiast

Founders love big TAM slides. Investors see right through them.

19 Oct 2025 · 0 min

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Short YouTube video excerpt by Dr. Thomas J. Powell arguing that founders often overstate Total Available Market (TAM) with huge headline numbers (e.g., '$3.2 trillion'), which investors see through. He defines TAM practically as the achievable market for a given business and notes that while a large market is desirable for scaling (and raising capital), small businesses require much less capital.

It's only fun if it's a big marketplace. Now we hear this thing called tam, or the Total available market. Or people come in and say, it's a $3.2 trillion marketplace. No such thing. In reality, it's what's the achievable market for you and your business to be able to get to. But you do want it to be a big market. Because if you're going to be a sole proprietor that only has a small coffee shop, how much capital do you need? Not very much.