[lione]

I'd say the vast majority of PC gamers right now have maybe one or two special edition physical boxes and everything else is digital in their Steam/Origin/Epic accounts. As it is right now at any point those accounts can be closed down without oversight or warning, and you don't legally own the games in your steam account. I don't see game streaming fundamentally changing things at this point, the "own your games" ship sailed long ago. Also like many steam users I have a metric ton of games in my account that I will likely never play or use again in my lifetime. A monthly rental playing a catalog of old games and some new ones might honestly end up costing me less then having all those old useless games in my library that I played once for 2 hours and can't return that I'll never play again.

As for the subway thing, wifi networks are becoming more and more ubiquitous and advanced, I know my local subway has it's own inbuilt wifi, obviously it's not going to be amazing any time soon but between that and 5g and the hotswapping connections to keep uptime, idk it can work.