This is cool and whatever, but after the work my company has put in to actively move things away from Vercel I'm going to assume it's hugely overpriced by default compared to even other similar SaaS services.
I've only talked in depth with one of them, but the reason is complexity: they want "a react framework" and every update to NextJS substantially raises the complexity bar, introducing a large number of features that they don't want or need. There's also been at least one incident of a NextJS bug which only affected non-Vercel deployments; and that incident came up in this discussion as evidence for their concern that NextJS doesn't have a future outside of Vercel (the company and the platform).
My impression on Remix is fairly solid, but it doesn’t have quite the “just write and deploy” appeal that Vercel’s done quite a good job with, and they’re somewhat trailing behind Next.js in terms of tracking newer React features (which, in practical terms, doesn’t matter much, since even beta Next.js features tend to ship in a very alpha state of quality).
That said, if you’re willing to sweat a bit on getting something deployed, Remix delivers a pretty good experience overall.
I just want to write my SSR applications with dynamic data and deploy them to Docker, Next is making it harder than it needs to be.