timppu: The Steam-generation, the ones who wonder how can you even install a GOG game
I think you're mis-attributing that. I think you'd be better off calling it the Facebook generation. There's no install at all for that sort of flash game, and thus no reason to know how to install something manually. I think it's the paradigm we're going toward, again;cloud services, streaming games. Thin clients, the "nicer" modern name for the dumb terminals of the mainframe era. I'm old enough to have seen the pendulum do two full swings for business software, and games are surely a business, these days.
With Steam, at least, you *do* have to install a game, even though it's wholly automated. Even though it's one tiny step from a cache, to clear with your cookies after you do your personal browsing for the day ;)