In a lot of cases you really don't want a server at that layer of the stack anyways, when you could be serving your site from a CDN/"edge" that's built for low-

In a lot of cases you really don't want a server at that layer of the stack anyways, when you could be serving your site from a CDN/"edge" that's built for low-latency to end users, cost-optimized for transfer and not having to play all of the games that scaling yet another layer brings. I'm willing to believe that some people really need server side rendering but it'd a hard sell to convince me that the majority of people chasing SSR really need it, or that they're better off for it.