All absolutely true, but I just get the same feeling I had before this generation and before the one previous - that most games will still end up at 30fps because the graphics will be better. When you lead from a graphics rather than gameplay POV that's always going to be the outcome. Perhaps more power will change things (this time), but as the pressure to make the best looking game isn't going to go away I think 30fps is just as likely as ever.
I read something recently about an online discussion between game artists and directors and the gist of it was basically, iirc, that gamers were the main problem with 30fps because they weren't yet accustomed to, or sufficiently conditioned to desire, a "movie like" 30fps, and that 30fps was better because it allowed you to produce more cinematic looking effects.
So many game designers / artists / directors seem to be frustrated movie directors. And that makes me sad.