PUBG is now a very special beast: It's CPU bound = we are unlikely to ever see a "AAA" game with anything beyond it's complexity for eternity. You can run it on a 1030 GPU at 60 FPS.
I wish! The truth is server and client programmers rarely get along so persistent MMOs with alot of moving parts are only going to happen once one developer is schizo enough to do both well. AAA will never be able to do it.