What i think Sony did wrong (and sorry i didn't check if someone said this already) is they didn't build an IP (beside GT) that can sell blockbusters, so they can rely on their own IPs if something goes wrong or if third parties leave your system (or don't develop exclusively for it).
When you don't develop several IPs that sells 5+ mil during your prime time (PS1 and PS2) you will have a hard time carrying yourself if third parties to ditch you.
See Nintendo.
^^^ This is what you get for blowing a rumor out of proportion
Chocobo brain damage!!! Here, drink this diet Coke..*runs*
Currently playing :
VC - Ogre Battle March of the Black QueenWii - New Super Mario Bros. Wii
DS - Glory of Heracels