What sales level is needed for PS3 devs?

[Bodhesatva]

Diomedes1976 said:
Good analysis Bod.Add to that the strong european sales and the way better position in Japan and we find a solid situation for the PS3 as long as software support goes.

Yep, adding that to the OP now.

Edit: guys, this isn't about exclusives, as that would be an entirely different set of calculations. It's about multiplatform development. If you want me to really pierce the heart of the issue: will the PS3 suffer the software fate of the Gamecube, and simply stop receiving ports from third party developers? Answer: I think that's extremely unlikely.