How The Best Companies Defend Against Mediocrity And Rot

In this episode of the Main Function Garry sits down with Eric Ries, author of "The Lean Startup", about his new book, "Incorruptible: Why Good Companies Go Bad And How Great Companies Stay Great". Ries breaks down why shareholder primacy often leads to company and product degradation, how founders can lose control of the companies they build, and what legal structures and governance models can protect a company's core mission from outside threats. Pre-order the book here: https://shorturl.at/rXnn1 Apply to Y Combinator: https://www.ycombinator.com/apply Work at a startup: https://www.ycombinator.com/jobs Chapters: 00:00 — Intro 00:47 — The Professor's Wake-Up Call 03:43 — A Wake, Not a Party 05:12 — Shareholder Primacy Explained 08:20 — The Jeff Lawson / Twilio Story 10:27 — When You Fire the Founder 12:01 — The Legend of Sol Price 15:38 — Costco's Secret Origin 18:33 — Mission-Controlled Companies 19:40 — Finding the Right Board 22:26 — Just Become a PBC 23:40 — Who Invented Shareholder Primacy? 27:08 — It's Not Even a Law 30:28 — The Builder's Intuition 34:47 — Novo Nordisk & the $600B Bet 39:47 — Industrial Foundations Outperform 42:08 — The Problem With VC Fund Structure 43:05 — Dual Class Isn't Enough 44:54 — Building Something That Outlives You 45:03 — Anthropic's Governance Story + Outro

Eric RiesguestGarry Tanhost

May 22, 202650mWatch on YouTube ↗

EPISODE INFO

Released: May 22, 2026
Duration: 50m
Channel: Y Combinator
Watch on YouTube: ▶ Open ↗

EPISODE DESCRIPTION

In this episode of the Main Function Garry sits down with Eric Ries, author of "The Lean Startup", about his new book, "Incorruptible: Why Good Companies Go Bad And How Great Companies Stay Great". Ries breaks down why shareholder primacy often leads to company and product degradation, how founders can lose control of the companies they build, and what legal structures and governance models can protect a company's core mission from outside threats. Pre-order the book here: https://shorturl.at/rXnn1 Apply to Y Combinator: https://www.ycombinator.com/apply Work at a startup: https://www.ycombinator.com/jobs Chapters: 00:00 — Intro 00:47 — The Professor's Wake-Up Call 03:43 — A Wake, Not a Party 05:12 — Shareholder Primacy Explained 08:20 — The Jeff Lawson / Twilio Story 10:27 — When You Fire the Founder 12:01 — The Legend of Sol Price 15:38 — Costco's Secret Origin 18:33 — Mission-Controlled Companies 19:40 — Finding the Right Board 22:26 — Just Become a PBC 23:40 — Who Invented Shareholder Primacy? 27:08 — It's Not Even a Law 30:28 — The Builder's Intuition 34:47 — Novo Nordisk & the $600B Bet 39:47 — Industrial Foundations Outperform 42:08 — The Problem With VC Fund Structure 43:05 — Dual Class Isn't Enough 44:54 — Building Something That Outlives You 45:03 — Anthropic's Governance Story + Outro

SPEAKERS

Eric Ries
guest
Entrepreneur and author of The Lean Startup and Incorruptible, known for startup methodology and company-building governance ideas.
Garry Tan
host
President and CEO of Y Combinator and longtime startup founder/investor who hosts YC interviews and founder-focused discussions.

EPISODE SUMMARY

In this episode of Y Combinator, featuring Eric Ries and Garry Tan, How The Best Companies Defend Against Mediocrity And Rot explores how mission-controlled governance prevents founder ousters and value-destroying corporate rot Ries argues that modern “shareholder primacy” governance pushes companies toward short-term extraction, eroding trust, mission, and ultimately long-term value.

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