Just makes you wonder what the hell we're going to be using in 2023... :p
But yeah. Handhelds don't have nearly the kind of directing power as consoles in terms of how hardware is utilized, as mobile games don't require as big an investment as console and PC stuff. The controls and software available to the Vita will be far more important to it's survival than the malleable "console in your pocket" promotion they've been doing.
I couldn't even wager a guess on that one. We're actually up to the Hexadeca-Cores now (16 cores) and they are commercially available now. So think about it. Seven years from dual core to 16! It gets pretty amazing.
But you're right. See, for the PS3, ten year plan is fine I think. Maybe a little long there too, but consoles seem to be able to manage a lot better. A year or two from now, Samsung, Apple or, who knows, maybe Microsoft, Nokia or Blackberry, will likely release a smartphone that will be more powerful than the Vita and games will continue to get more and more advanced for tablets and those same phones. We're actually in an age where the leaps are going to make non-console gaming a really, really weird place.
I don't envy Sony on this one. They're going to need to work hard for the Vita.