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Korsak’s Substack

Personal blog · napkinmath.substack.combusinesseconomicsstartups

Korsak’s Substack is a personal blog at napkinmath.substack.com about business, economics and startups. Since 2020, 10 different Hacker News readers have linked it 18 times, most often “Costco Convinces Brands to Cannibalize Themselves”. The last post was in 2024, but the archive is still widely read.

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18mentions?
10HN people?
2020–2020first – last linked?

My personal Substack.

Most-linked posts?

  1. Costco Convinces Brands to Cannibalize Themselves
    4 people · 4 mentions · first linked 2020-07-15
  2. Why MasterClass Isn’t Really About Mastery
    4 people · 4 mentions · first linked 2020-07-01
  3. Substack Rhymes with Medium
    2 people · 2 mentions · first linked 2020-09-26

What Hacker News says?

  1. Submitted A $500M call option on home gyms as a story · 150 points

    HN discussion
  2. Submitted Costco Convinces Brands to Cannibalize Themselves as a story · 84 points

    HN discussion
  3. Submitted Why MasterClass Isn’t Really About Mastery as a story · 21 points

    HN discussion
  4. Submitted Costco Convinces Brands to Cannibalize Themselves as a story · 5 points

    HN discussion
  5. Submitted What You Need to Know About the Ant Financial IPO as a story · 4 points

    HN discussion
  6. Submitted Want to Become a Unicorn? Buy It, Don’t Build It as a story · 4 points

    HN discussion
  7. Submitted Substack Rhymes with Medium as a story · 3 points

    HN discussion
  8. Submitted Substack Rhymes with Medium as a story · 3 points

    HN discussion
  9. Submitted GPT-3 Will Accelerate the Privatization of Internet Communities as a story · 3 points

    HN discussion
  10. Submitted How Costco Convinces Brands to Cannibalize Themselves as a story · 3 points

    HN discussion
  11. Submitted The Quest for Monopoly as a story · 2 points

    HN discussion
  12. Submitted Intangible Assets: The Invisible Value Driver as a story · 2 points

    HN discussion
  13. Submitted Why MasterClass Isn’t About Mastery as a story · 2 points

    HN discussion
  14. Submitted The Jet.com Obituary as a story · 2 points

    HN discussion
  15. Submitted AB 5 Will Break Uber’s Business as a story · 1 points

    HN discussion
  16. Submitted Costco Convinces Brands to Cannibalize Themselves as a story · 1 points

    HN discussion
  17. Submitted Why MasterClass Isn’t About Mastery as a story · 1 points

    HN discussion
  18. Submitted Why MasterClass Isn’t About Mastery as a story · 1 points

    HN discussion

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