RSC is React’s take on SSG and islands architecture (but deeply composable rather than shallowly).
As for the origin story, didn’t Next run an experimental release of RSC way before it was GA in react 19? I don’t want to take anything away from your contributions to it, and if you can tell me that react 19 was not at all shaped by Vercel I’ll accept that. But it goes against the general perception that RSC is heavily supported by Vercel, to feed into their hosting business.