The big problem for these AAA studios is that this is their unique selling point. Hyper-realistic graphics and sprawling game worlds. If they stop doing these, they're hardly different to the games from five years ago (which you can still buy and cheaply at that). And they're hardly different from indie titles. They would enter quite the competitive market.

I do agree that we're at somewhat of a breaking point. The production costs grow to absurd levels. The graphical advances are marginal. And not many gamers can afford the newest hardware to play these titles. But I don't think, there's an easy exit strategy for these AAA studios...