📖 Business
Biz - Build Buy or Belong
When incumbent companies face platform disruption, they have three strategic options: build their own platform, buy an existing one, or belong to someone else's platform as a complementor. Cusumano, Gawer, and Yoffie argue that most incumbents default to "build" when "belong" would be smarter, or delay the decision until all three options have degraded. The framework forces an honest assessment of your capabilities, timeline, and competitive position — and prevents the common mistake of underestimating how hard it is to build a platform from scratch.
2
Minutes
2
Concepts
+45
XP
1
How It Works
Three strategic options for incumbents:
- Build — Create your own platform from scratch. Requires: strong technical capabilities, ability to attract an ecosystem of complementors, willingness to cannibalize your existing business model, and time. Highest upside but highest risk. Example: Microsoft building Azure to compete with AWS — they had the technical depth, developer relationships, and enterprise distribution to pull it off. Counter-example: many traditional retailers trying to build their own e-commerce platforms instead of using Shopify.
- Buy — Acquire an existing platform. Fast market entry but extremely expensive. The real challenge isn't the acquisition — it's the integration. Platform value lives in the ecosystem (developers, users, complementors), and ecosystems are fragile. Heavy-handed integration can destroy the very thing you bought. Example: Facebook buying Instagram and WhatsApp — successful because they largely left them independent. Counter-example: Yahoo buying Tumblr and destroying its community.
- Belong — Join an existing platform as a complementor or participant. Least risky, fastest to execute, but you cede control and become dependent on the platform's decisions. Best for companies that can't build or buy but can differentiate within an existing ecosystem. Example: Salesforce built an empire as a complementor on cloud infrastructure platforms. Many successful SaaS companies thrive by "belonging" to AWS/Azure/GCP rather than building their own infrastructure.
Decision factors:
- Technical capability — Can you actually build and maintain a platform?
- Time pressure — How fast is the market moving? Build takes years.
- Network effects — How strong are the incumbent platform's network effects? Can you overcome them?
- Cannibalization willingness — Will you disrupt your own profitable business?
- Ecosystem attractiveness — Can you attract complementors, or will they stay with the incumbent?