@ soccerdrew - Of course we don't know the exact costs
But we can infer based on the reported numbers by Sony.
If you assume PS2 hardware and software makes money
and
PSP hardware and software makes money
Then
PS3 hardware LOST (in the past) a lot of money
and if PS3 software made money (which most likely is NOT the case),
then PS3 hardware LOST even more money
Again, this is based on the PAST , fiscal year ending Mar 2008 on ACTUAL SONY NUMBERS.
If refuting, please refer to the original posts and see which numbers you want to change (on the PS2 and PSP)