Sony’s domination = How much profit?

[DoesWhatNintenDont]

The closer I have payed attention to sales of Video games lately, I seem to keep running into a the concept that says Sony didn't make a whole lot of profit from PSone and PS2 domination of the market.

With their brands being everywhere, and the sheer amount of titles, it almost seems ridiculous to think Sony didn't profit --significantly-- from the two systems.

I've heard rumors and rumblings about Sony barely scrapping into the black with their two systems, and yet I've never been able to find any articles or facts about this claim.

Can anyone help me out on finding information on this? It would be much appreciated.