Ultimately games sell systems.

Sony has been successful in the past because they had the best library of games (they may have had a lot of junkers, but by sheer volume of games alone they were able to get a number of great games).

As an example, when Nintendo failed to provide a suitable platform for game developers of renewable franchises like EA Sports' huge collection of games, they dug a huge hole that they still might not get out of. They became a Mario-Zelda-SmashBrothers-RE franchise system(s). If you wanted to play sports, racing, FPS games, etc., you were probably going to be playing it on a PS or the Xbox, except for perhaps a few novelties like Mario Golf, Mario Tennis, Mario Kart, etc.

As long as Sony hasn't lost the good will of those companies who make the games for their systems, in the long run, as the price comes down over the next couple of years, PS3 will be a success IMO.

Plus they have FF.