Ummm.
Wasn't GTA a PC-only game at one point, and every iteneration on the PC at every stage of the game?
Sony didn't make GTA a succuess, considering the PC started it all. Yes, later on, once 3-SA came out, it was huge on the PS2, but thats because of the userbase, and the fact they did a great job on the UI for the game - GTA already had its great merits, and was a good seller on PC already.
Back from the dead, I'm afraid.