Essay

TAM: Notes & Thoughts

Sajith Pai · sajithpai.com Free Intermediate India

Sajith Pai is an India VC, and he tells on himself here: he passed on WhiteHat Jr. by trusting a headline India TAM number, then learned it was the wrong way to think. The piece grounds you in real reachable demand (the actual India1 consuming class and a beachhead you can serve) rather than a paper market pulled from a slide. Read it as a starting point for why a smaller, real market usually beats a big, imaginary one.

  • Headline India TAM figures are a blunt tool that measure existing demand, not the market you can actually reach or expand into.
  • Size the problem and a concrete beachhead you can win first, since a targetable immediate market funds the next round even when TAM looks small.
  • Most Indian startups are really addressing India1, the consuming class, so honest sizing starts from who will actually pay, not the full population.

It answers 3 questions

  1. How do I estimate a market size when the product I'm building doesn't have a category yet?
  2. How do I research a market in India where reliable data and analyst reports basically don't exist?
  3. Everyone says my market is too niche to be venture-scale. When are they right, and when are they wrong?

Read with it

  1. Most market sizing advice online is generic TAM SAM SOM filler. This one is written by an investor, backed by a survey of 30... Pear VC Essay · ~15 min read Market Sizing Guide Ian Taylor
  2. The single best thing ever written on customer conversations. It teaches you to ask about the customer's life and past... momtestbook.com Book · ~130 pages The Mom Test Rob Fitzpatrick
  3. The definitive essay on where good ideas come from: notice problems you personally have, don't force it. Use it as the lens for... paulgraham.com Essay · ~20 min read How to Get Startup Ideas Paul Graham
  4. The essay that put 'product-market fit' into the startup vocabulary. Read it for the gut-level description of what PMF feels... pmarchive.com Essay · ~15 min read The Only Thing That Matters Marc Andreessen
  5. The definitive short read on why disruptive ideas get dismissed as toys, and why that dismissal is your opening. It reframes... cdixon.org Article · ~5 min read The Next Big Thing Will Start Out Looking Like a Toy Chris Dixon
  6. The author of Crossing the Chasm explaining beachhead selection in plain, modern language, the fastest way to absorb the... Lenny's Podcast / Lenny's Newsletter Podcast · ~75 min Geoffrey Moore on finding your beachhead, crossing the chasm, and dominating a market Lenny Rachitsky & Geoffrey Moore
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