Similar article on IGN:
IGN: Valve Steps Up, Defends PC Gaming
Honestly, I don't see why Valve is so reluctant to take on the mantle, considering the success and placement of Steam, they are the best equipped, most capable and simply obvious candidate to "save" PC gaming. All they need to do is get in the game.
I'm not holding out for Activision-Blizzard on that front.