Article

I Reviewed 1,000+ Pitch Decks. These Are the Most Common Mistakes

Haje Jan Kamps · TechCrunch Freemium Intermediate

Kamps has seen more market-size slides than almost anyone and calls out the exact failures founders repeat, including claiming a whole industry as your TAM. It is a fast reality check on what makes an investor stop trusting your numbers. Read it to catch the mistakes in your own deck before someone else does.

  • Claiming an entire industry as your TAM signals lazy thinking
  • Your TAM is what you can earn, not what your customers earn
  • A defensible smaller number beats an indefensible huge one
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The question it answers

  1. What are TAM, SAM, and SOM and how do I actually calculate them?

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