Due Diligence

Market Due Diligence

Learn to verify the market is real: genuine demand, an honest bottom-up size, growth or decline, and competition — not a seductive "1% of a huge number" story.

  • Beginner
  • 11 min total
  • 13 chapters

What decision this helps you make: Whether the market a business depends on is real, big enough, reachable, and durable — before you build or buy.

What this topic is

Market due diligence verifies the market a business depends on: that demand is genuine, that the market is big and reachable enough to matter (sized bottom-up, not top-down), whether it's growing or shrinking, and what the competitive dynamics are.

Why it matters

Every business ultimately depends on a real market. A business in a shrinking or vanishing market is a declining asset no matter how well-run. And "1% of a huge market" is a fantasy — what matters is the real, reachable, paying market, verified with bottom-up evidence.

Who should learn it

Anyone starting a business, buying one, or entering a new market.

What you will understand

  • Understand market diligence: verifying real, reachable, durable demand
  • Distinguish a big-sounding TAM from the real reachable market
  • Size bottom-up (real customers × real spend), not top-down
  • Check growth, decline, and competitive dynamics

Prerequisites

Common misconception

"The market is $10 billion — we only need to capture 1%." That "1% of a huge number" is a fantasy, not a plan. No business captures an arbitrary slice of a giant market; what matters is the serviceable, obtainable market — the customers you can actually reach through real channels and who will actually pay. Market diligence sizes demand bottom-up (real customers × real spend) and checks whether it's genuine, reachable, and durable — not just big-sounding.