What do you mean it seems like an odd decision to make money of PSP Go.... Firstly, they might actually be making money of the existing PSP, secondly, the high price of the PSPGo is likely to be short term to take advantage of the premium of a brand new console, and also to help offset the PS3 price cut.
What really matters is making the console at the right price to make it competitive. They feel that they cannot afford to sell the PS3 for a profit, as it just would not sell, in the long term costing them software sales, and if they do not stay competitive, they might lose support and go out of business. Anyway, to answer your main question, I don't think they will be making any money on the PS3 until the PS4 has been released







