Incorruptible is Eric Ries’s boldest work since The Lean Startup. Where his earlier books offered tools for product innovation and scaling, this one tackles a deeper, systemic why do even the best companies drift from their missions, betraying the trust of customers, employees, and investors? Ries argues that the culprit is not simply greed or incompetence, but the way we define profit and structure governance. At its core, the book reframes “profit” as the maximization of human flourishing. Using case studies from startups, established corporations, and public institutions, Ries shows how organizations can adopt governance structures that resist short-termist pressures and mission drift. Drawing on his own experiences founding the Long-Term Stock Exchange, advising companies like Airbnb, Cloudflare, and GitLab, and working with governments and investors, Ries offers a manual for designing and operating organizations that can resist corruption from the inside out. He calls these “mission-controlled” or “incorruptible” entities with governance exoskeletons strong enough to preserve their values through crises, growth, and leadership succession.