I think so: People who played video games as kids, don't really have much time for them now, and don't really want to go through the effort of even figuring out which console to get and setting it up, but occasionally get curious about a particular game. Maybe they don't even have an obvious place in the house for a console, if they only have wall-mounted smart TVs with nothing hooked up to them, or maybe they don't want to give their own young kids console games yet, which is hard to do with a PlayStation in the living room.
It's probably possible to turn some of these people into regular gamers with a service like Stadia. But a lot of them won't buy many games, and those that do might bite the bullet and go out and buy a console, so probably not the best audience for a product?