PC gamers are not so unique. Throughout the past 25 years pc gamers have chosen the best performance/price technologies, that is why 3DFX , PowerVR, Matrox, Hercule, Cirrus Logic, 3d Labs, fell by the wayside to Nvidia and ATI.
That is why AMD cpu sales spiked through the P4 Rambus era.
You assume that because 3DO and Jaguar failed, and Xbox didn't get close to PS2 install base, and because exclusives matter that for some reason performance doesn't matter to console gamers. And the gap has the potential to be huge, 60 vs 30fps.
The gap between PS3 and Xbox360 or PS4 and Xbox One has never been this big. Neo literally cannot double the framerate of current gen games with only a 24% jump in bandiwdth because of memory bandwidth limitations, while Scorpio can.