Who likes their PSX? How \'bout their PS2? You think these two machines have/are proving to the world that Sony offers some of the very best games on the videogame front? How do you think that came to be? Sony playing nice-nice? Grow up...
Sony is as huge a megacorporation as Microsoft and for all the same reasons. Ridge Racer, Wipeout, Tekken... these games came to us because Sony arranged exclusive agreements with their producers.
Getting to the top is all about playing "King of the Mountain"...and to win, you gotta shove everybody else off. Strong-arm tactics, muscle, threats, ... that puts you on top. It put Microsoft on top with Windows. It put Sony on top with electronics. And as long as it works, companies will continue doing it.