Sony has no problem to port games to PC if it's worth it, but some of those games are typical console stuff that wouldn't do remarkably well on PC, others could do well on PC, but they are system sellers for PS, so I could see only a few of them on PC, and only when their lifecycle on PS is concluded (Uncharted and maybe Demon's Souls, for example), but GT and God of War, well, I think it's quite unlikely to see them on PC, except old versions on emulators.
Maybe in the longer term, if Sony console business model will radically change, but I see it a lot easier that Sony eventually copy Ninty's strategy of releasing a limited range of titles in its strategic library outside of its consoles to attract more new users willing to play full fledged titles.