Maybe this will get lost as Just Another Comment but...
I feel like subscription services should actually serve as a true platform for those kinds of games. Something like joining a party playing Game X, and while you play your round(s), Game Y, or a slice of Game Y is downloading. When you finish your round of Game X you get switched to Game Y and it goes on and on, with some kind of voting on the next game.
There is a whole infrastructure dedicated for this required, and nevermind the multiplatform issues.
It just feels like the interactive nature of gaming would deliver one the one issue of streaming services where "there's nothing to watch". The cynic in me sees this as just another place to cram ads.
Mentlegen.