Give this article a read:
http://n4g.com/user/blogpost/pixelsword/527895
It pretty much convinced me 100%, but then again I was never against the idea. Some Playstation games play with PC, PS3, and PSV gamers so I think Sony might get on bored eventually if a third party could make a good argument. However I don't really think MS would agree to this any time soon since it would probably make them look bad and even more generic. Nintendo is a wild card in this, and honestly they have a lot of online catch up to do before they are really even relavent in this conversation.
Prediction for console Lifetime sales:
Wii:100-120 million, PS3:80-110 million, 360:70-100 million
[Prediction Made 11/5/2009]
3DS: 65m, PSV: 22m, Wii U: 18-22m, PS4: 80-120m, X1: 35-55m
I gauruntee the PS5 comes out after only 5-6 years after the launch of the PS4.
[Prediction Made 6/18/2014]
