There's plenty of sociopaths and people with not a lot of disposable money, but my theory is that as we (gamers) get older, richer, and with less available time, we will prefer the short and sweet experience over the 100+ hour game loop.

I know that's the case for me, and one of my favourite pastimes is install the little games from itch.io, which average at 10 minutes long, and just enjoy the naivety and craft that never overstays its welcome no matter how uncooked it is. You can have too much of a good thing; once I really cared about getting enough enjoyment/dollar, these days I'd rather spend $20 dollars for a good 2 hour experience, than find myself bored after 15 hours of the same.