Well, here are some scenarios
PS4 Subscription- Maybe a couple years of ps pus to lower the price.
Lets say the ps4 starts at $400, so maybe this model will be $300.
PS+ could most likely get away with ps3/indie games for free since it's only the launch window.
Gaikai-really not sure. I assuming this will be a ps plus function. It is only at the beginning stages I think so you can prob stream only a small amount of games at launch. It might eventually increase to every game.








