Where the term comes from Coasean floor appears in Alex Komoroske's exploration of how the web's accidental design choices concentrated power in big platforms [^bb2c42aa-478f-5c9a-ac26-e83a54c63127@1564]. The mechanism, step by step In Komoroske's telling, the same-origin paradigm — the web's 30-year-old security model that treats each origin as an isolated island — creates data gravity. Because your life is integrated but the sites you use are not, you become the copy-paste orchestrator between apps. When choosing between a cool startup and an incumbent that already holds your data, you pick the incumbent. So data accumulates where it already exists, and incumbents grow massive [^bb2c42aa-478f-5c9a-ac26-e83a54c63127@1564]. The floor itself As incumbents become massive, the Coasean floor rises: features below a size threshold — Komoroske's example is 50k users at Google — can never be prioritized. The result is that entire classes of useful software cannot exist, because no big platform will build them and data gravity makes it hard for small ones to compete [^bb2c42aa-478f-5c9a-ac26-e83a54c63127@1564]. - The Coasean floor is the rising threshold below which features are never prioritized inside massive aggregated platforms.- It is a consequence of data gravity caused by the same-origin paradigm.- Its cost: entire classes of useful software cannot exist.