Carliss Baldwin & Kim Clark — Design Rules: How IBM Created Ecosystems (and Competitors)

"The act of modularizing your product is the very act of inviting your future competitors into existence." Carliss Baldwin and Kim Clark, authors of the landmark Design Rules: The Power of Modularity, join Aidan McCullen for an Innovation Show exclusive. Their book is the Rosetta Stone of platform strategy — the mechanic underneath the Innovator's Dilemma — and it has never been more relevant than in this age of AI. In this conversation, Carliss and Kim reveal: Why the power of modularity underpins Moore's Law — and everything digital around us How IBM engineers, locked in a Connecticut motel before Christmas, invented the first conscious modular platform strategy How the System/360 turned IBM from a competitor into "the environment" Why the engineers who walked out of IBM's San Jose plant spawned the entire disk-drive industry How IBM owned 30% of Intel and contracted Microsoft — yet failed to own the only two sources of profit in the PC ecosystem Why "the game is never incontestably won" Why Sears couldn't become Walmart, and Walmart couldn't become Amazon The Chevy Vega that shook itself apart on the test track — and the cost of losing tacit knowledge Why AI agents are forcing companies to map their workflows for the first time How Haier replaced twelve layers of management with 4,000 entrepreneurial teams Why leadership is the operating system of the organisation 00:00 Why This Book Matters 00:33 Modularity For Founders Investors 01:39 Meet The Authors 02:25 What Are Design Rules 03:43 Design Rules Everywhere 06:50 Digital Tech Meets Software 10:52 IBM System 360 Breakthrough 14:22 Artifacts And Interfaces 20:55 Ecosystem Value Migration 26:10 Capturing Value In Platforms 30:23 AI And Measuring Modularity 34:08 Architectural Change And Retail 37:37 Why Incumbents Survive Or Die 43:28 Modularity Creates Options 44:48 Incumbents Miss Nuances 47:09 AI Needs Workflow Maps 52:18 Tacit Knowledge Lost 54:13 Small Car Hood Failures 59:00 Why Ideas Bomb 01:01:28 History Constrains Firms 01:05:52 Modular Organisations Rise 01:08:58 Haier Team Ecosystems 01:17:41 Leadership As Operating System 01:21:55 Spandrels And Tech Reality 01:27:53 Closing Reflections About the Guests Carliss Y. Baldwin is the William L. White Professor of Business Administration, Emerita, at Harvard Business School and author of Design Rules, Volume 2: How Technology Shapes Organizations (MIT Press). Kim B. Clark is a former Dean of Harvard Business School, NAC Distinguished Professor of Management at BYU Marriott School of Business, co-author of Leading Through, and co-founder of the Leading Through Institute. Together they wrote Design Rules, Volume 1: The Power of Modularity (MIT Press). Design Rules, Volume 2: https://mitpress.mit.edu/9780262049337/design-rules-volume-2/ Leading Through Institute: https://leadingthrough.co About the Host Aidan McCullen is a 2025 Thinkers50 Innovation Award recipient, keynote speaker on AI, disruption, innovation and change, host of The Innovation Show, and author of Undisruptable: A Mindset of Permanent Reinvention (Wiley). More at https://theinnovationshow.io/about-aidan-mccullen About The Innovation Show The Thinkers50-recognised podcast where square pegs find their place in a world of round holes. Subscribe to the Thursday Thought on Substack: https://thethursdaythought.substack.com Connect: https://theinnovationshow.io https://podcasts.apple.com/ie/podcast/the-innovation-show/id1148455669 https://open.spotify.com/show/63nFKf4bsSWo3W72gWtOsK?si=b62d9614237c4450 https://www.youtube.com/c/theinnovationshow https://www.linkedin.com/in/aidanmccullen