GFWL is a steaming pile of horse dung. I thank Shiva every day that not all games support it, and I wish a painful death for it and anyone who ever had anything to do with its creation.Worse, not all games will support GFWL
As for the "PC gaming is dying, whaaa what are we going to do" brigade, kindly read here [http://adrianwerner.wordpress.com/] and stop worrying.
My prediction: PC gaming is heading for a darker age, which will see mostly indie releases and small-time developers (good) and crappy console conversions (bad). PC gaming is not going to die, for several reasons.
Reason one: consoles and casual games are a fad; they are the new fancy thing that all the cool kids are doing. In a few years the mainstream herds are going to get tired of it and dedicate their attention to the next thing the entertainment people cram down their throats. Then, PC gaming will see a new dawn, and gaming will (hopefully) go back to being a thing for nerds who don't give two hoots about social status.
Reason two: the worst day on the PC is still going to give you a much more satisfying experience than the best day on consoles. Pay attention to games that don't necessarily have a budget of a million bajillion dollars, avoid crappy conversions and don't give in to hype, and you're going to have a ton of fun whatever the situation. Though admittedly doing this requires knowing how to use your brain...
Reason three: despite the rise of consoles, the PC hardware industry is worth a ton of money. Lose the games, and suddenly there are a lot of people who have no motivation at all for buying new CPUs and video cards. Nobody wants that to happen.
Reason four: PC gamers might have become a minority, but we are a tenacious bunch. Even if you were to remove new games, we'd make new ones and modify existing ones ourselves. There's never going to be lack of content for the PC, one way or the other.
Reason five: modding. Nuff said.
There are probably other reasons, but I've written a long enough post already.