People don't just stop playing Facebook games. They divorce them.
Games have no other purpose than to please.
We are shifting into an enjoyment-based economy. And who knows more about making enjoyment than game developers?
I jokingly call this convergence of games into reality the "Gamepocalypse": the moment when every moment of life is actually a game.
Facebook is terrifying to the traditional games biz.
You don't want the office to be a completely relaxing place. You want it to be a vibrant place.