the assumptions seem too big when you are including 05 and 06. I don't think PSP sotware made that much money, and if you are including 3rd party software it's not gonna even be close to $10 per game. I would imagine sony makes $5 maximum on PSP 3rd party software. I think the gains on PS2 hardware is too big if you are including 2005 and 2006. The assumption for PS2 software will probably only hold true for 1st party software.
I agree that the loss may be much bigger than we see that it is because of PS2 and PSP, possibly double, but not 11 billion.
currently playing: Skyward Sword, Mario Sunshine, Xenoblade Chronicles X