It’s good enough that the ecosystem outweighs the superiority of something like SolidJS.

React has React Native as part of its ecosystem. That’s a massive advantage. react-strict-dom is going to be a game changer for the development of universal apps.

We're talking about two different topics here. I agree, the ecosystem around react is huge and there are reasons a team would pick react. Ecosystem isn't an indicator of the technical merits of react itself though, and that's what I was originally responding to here.