⚠ Ecosystems Can Be Ported to a Good-Enough RivalLow threat

The design ecosystem is a powerful network effect, but it follows volume rather than creating it permanently — and volume can, in principle, shift. The EDA and IP vendors support TSMC most heavily because most leading-edge design happens there; if a rival foundry won meaningful leading-edge volume, those same vendors would invest in supporting it too, because their business is to serve wherever the designers are. The ecosystem is not loyal to TSMC for its own sake; it is loyal to scale, and scale is what TSMC must keep winning.

This means the ecosystem moat is contingent on the technology and scale moats beneath it: as long as TSMC leads on process and captures the volume, the ecosystem organizes around it, but the ecosystem would follow a rival that genuinely closed the gap and started winning designs. Governments subsidizing alternatives understand this and are funding ecosystem development around Intel and others. The porting is not trivial — re-optimizing tools, IP, and flows for a new process is real work, and it creates genuine switching friction — but it is a matter of effort and incentive, not impossibility. The design ecosystem deepens and reinforces TSMC's lead today, but it is a consequence of that lead more than an independent source of it: win the volume and the ecosystem follows; lose it, and the ecosystem would migrate too. The network effect is real, but it is rented from TSMC's underlying dominance, not owned outright — the OIP alliance gathers where the volume is¹.