I have a PC. I have no need for (additional) machines.
I have a decent PC too. I5-3570k with a GTX 670, 8GB ram etc etc.
But it doesn't play Sony/Nintendo exclusives, and doesn't play certain Microsoft/Console Exclusives.
and yeah I'm glad that Astro won't have to make a new mixamp specifically for the Xbox 1, but they probably will make one anyways hah
far as I can tell nothing should change between ps3/ps4. At least nothing that has been announced.
Sure it can...via emulator! :)