Subscription based, streaming games are probably the next big change. I mean, companies like EA and Activision would probably cum rainbows once the technology becomes viable. Instead of a few hundred dollars blown per household to have the console, just pay the subscription fee, sign up to a service, and tap into the tower sized Mega Xbox being constantly upgraded in Cheyenne Mountain. All you'd really need is a controller, internet connections will one day be so common and so powerful that sending input back and forth wouldn't be a problem.
This would mean that shit like Gotham City Imposters would be the standard, and if you don't pay your monthly fee or they just decide to, you lose ALL your games. Not just the one you got in trouble on, you lose your service, and that's the only connection to your games you have. It's like Netflix, I guess. We're going there, and as much as I hate it, I can't see a way around it :/