This is all a bunch of nonsense. You can blame all the casuals playing Angry birds on iDevices for this.
Obviously Nvidia is hedging the death of the PC (like microsoft) and investing in other forms of gaming/display technologies. Whats ironic is that most of the folks who would spend money on a discrete video card (or high-end console) wouldn't touch the steamy turd that is streaming games. OH yes, I've played Onlive.. its actually extremely cool tech... but horrid to look at, and laggy. In the era of "HD" it is anything but.
So just as the Wii brought on copycat and alternative (and lousy) controllers. The cell phones and mobile are bringing alternative and copycat (lousy) graphics to users without the needed hardware expense.