Companies and franchises start up on the PC, make enough money, then become console focused.
Crytek, Id, Epic, GSC, Bethesda, and several more
Battlefield, Call of Duty, Stalker, Deus Ex, Unreal, and many more
http://www.gamespot.com/news/6273454.html?tag=latestheadlines%3Btitle%3B2
If the...