That was because it wasn’t technically good yet

Unity was notoriously trying to solve this but couldn’t find a way to fix latency

I think Google stadium(?) ran into the same issue

Concurrent shared state at raytracing speed across the internet is basically impossible

I think Stadia was pretty good and someone will figure out that business sooner rather than later (nVidia has a good product as well). Totally changed my mind on the concept of renting a server to play a game.

I believe the final solution will be that the gaming hardware will be installed at the next edge of your ISP to your home. The minimal latency you can have and much better than routing the stuff over the public net many milliseconds away to one of the main datacenters.