We more or less have this with Minecraft. Any 10y-old can run their own server, and thousands do. The only limit is your processor and technical know-how - and the technical part just got a whole lot easier. Looking through a list of available mods is stunning. Some simply change the look of the world, while others remodel the whole experience. (For some reason kids seem to like servers modeled on prisons. Yes, really. Figure out what that means.)
The one obvious downside is you can’t bring stuff from one world to the next. Kind of makes sense - some owners hand out rare goodies like candy, and some rare goodies might not even exist in the next world.
