At least 90% of the world doesn't care about openGL, FPS, or any of that stuff, what they care about is cheap flights and package holidays, their daily viagra bidding wars, and the ability to edit wikipedia to prove their world view. For those, even the nv drivers are adequate. So describing nVidia as the only company producing usable GPUs + drivers is, frankly, comical. Intel are the biggest selling graphics vendor for a reason: they are dreadfully boring graphics that just work fine for everything but the gamer/enthusiast market.
On the subject of ATIs FOSS drivers... IIRC, bridgman has said they are surprised at some of the performance they are already seeing from those drivers. To describe them as a sop is, again, laughable, as where they work they are, for the average user, far superior to nVidias offering, because, you know, they are just shipped by every distro with no legal issues.
I am, currently, still holding off on embracing ATI drivers for a while longer, because I want to give them a bit more time to mature, and also because I'm not shopping for a new laptop or desktop. I think we still need to give the ATI FOSS drivers time, they have come a long way in a short time, and the graphics stack is changing around them...
Maybe in another year it will be "Why did we ever doubt nVidia?", it could also be "There is only one high performance graphics option on Linux, and it's ATI". It really depends on performance of the FOSS drivers, and how close they an get to fglrx on the FireGL cards. As they say "We live in interesting times".