All you have to do is look at the PS2 and Xbox.
I think that's where we differ. I think Sony went down a new road that devolpers seem somewhat reluctant to follow.
I see Microsoft getting those treasured 3rd party titles too. GTA, The new Resident Evil, and likely Assasins Creed will all be on the 360 and you can play them for much less (with a rumble pack!).
Unless your a HUGE Final Fantasy fan (god help Sony if MS gets that too) I just don't see the justification.
Especially when you can play Mario, Zelda, GTA, RE4, etc all for the cost of a PS3.