It’s all too disconnected in that scenario I think. People have a hard enough time wrapping their head around streaming videogames… now you’re kind of asking them to do that with four screens on the same screen?
Certainly it’s possible, but I doubt any company will be so bold as to try it, mainly because I think the only way it really works is if you don’t even tell anyone how you’re doing it… which is something the likes of Microsoft and Sony (and Google, and Amazon) can’t ever do when it comes to their tech. They’d want to tout all their cloud this and that and customers will be turned off by all the tech talk.
I think that’s just one of a myriad of reasons Google failed with Stadia. Too much worry about the tech and too little care for the games.
Also… having four controllers in that scenario is super unlikely.
This isn’t the thread for all this stuff, but I do think Switch is successful in part because of the ease of multiplayer. The “gimmick” they showed at the start that everyone wanted to have a chuckle about (girl takes her Switch to a house party on the roof), while very marketingish in its depiction, is an actual reality for people and for families they just play on the TV. Two controllers were snuck into the box with the Joycons being able to be detached and used separately. Never underestimate “easy” as a selling point.