In This Article
- The Book and Its Central Argument
- Who Is Involved and What Ries Has Been Building
- Context: A Departure from Lean Startup's Methodology
- What to Watch
Eric Ries, the entrepreneur and author best known for The Lean Startup, announced his new book Incorruptible: Why Good Companies Go Bad and How Great Companies Stay Great during a virtual appearance at the University of Colorado Boulder's Leeds School of Business on April 2, 2026. The reveal came as part of CU Boulder's "Startups & Sandwiches" speaker series, marking a notable shift in Ries's public focus — from the startup methodology that made his name to the longer-arc question of why established organizations lose their way. According to incorruptible.co, the book is scheduled for release on May 26, 2026.
The Book and Its Central Argument
Incorruptible centres on what Ries calls "financial gravity" — the structural forces that pull companies away from their founding missions over time. Writing in a Hacker News AMA, Ries described the phenomenon directly: "I kept watching good companies drift away from the missions they were founded on. Not because anyone woke up one day and decided to be evil, but because the structure they were built on slowly pulled them there." The book examines how a select group of companies — including Costco, Patagonia, and Novo Nordisk — have built organisational structures that resist that pull and sustain their founding values over decades, or longer. According to markgraban.com, the full subtitle frames both sides of that question: why good companies go bad, and how great companies stay great. The book is available through Simon & Schuster, whose author page for Ries lists it under ISBN 9798893311860.
Who Is Involved and What Ries Has Been Building
The announcement positions Incorruptible as the product of a decade and a half of work across multiple ventures beyond publishing. In his Hacker News AMA, Ries stated that in the years since The Lean Startup he founded the Long-Term Stock Exchange (LTSE), co-founded an AI research and development lab called Answer.AI alongside Jeremy Howard, and advised a number of companies on governance — naming Anthropic among them. Simon & Schuster's author biography also lists legal services startup Virgil and IMVU among his ventures. That breadth of institutional experience across startups, public markets, and AI appears to inform the book's scope; Ries's AMA noted he has worked across "big companies and tiny startups, NGOs and governments, in almost every industry."
Context: A Departure from Lean Startup's Methodology
Incorruptible represents a thematic departure from the work that established Ries's reputation. According to Wikipedia, The Lean Startup — published in 2011 — outlined a framework built around rapid prototyping, validated learning, and iterative product development, drawing on ideas from lean manufacturing and agile development. The publisher reported sales exceeding one million copies, and the book debuted at number two on The New York Times Best Sellers list in the Hardcover Advice & Misc. category. A 2019 article cited by Wikipedia described it as having quickly become a foundational work in entrepreneurship education. Where The Lean Startup addressed how to build and test a new venture, Incorruptible turns to what happens after a company succeeds — and the institutional pressures that can erode its original purpose. The reader reception community site howisincorruptiblegoing.com has already begun applying the book's "financial gravity" framework in practice; contributor Brendan Marsh, a former Spotify product and organisation adviser, used it to compare Spotify's pre-IPO mission statement with its current one, identifying specific language that was quietly removed over time.
What to Watch
Incorruptible is set for publication on May 26, 2026, per incorruptible.co. Fortune has also covered Ries's arguments around the book's themes. For readers interested in LuvemBooks' assessment of Ries's earlier landmark work, our full review of The Lean Startup is available separately.