Nvidia's been doing this for a while now, since at least the Titan cards and technically the SLI/Crossfire craze too. If you sell it, egregiously-compensated tech nerds will show up with a smile and a wallet large enough to put a down-payment on two of them.

I suppose you could also blame the software side, for adopting compute-intensive ray tracing features or getting lazy with upscaling. But PC gaming has always been a luxury market, at least since "can it run Crysis/DOOM" was a refrain. The homogeneity of a console lineup hasn't ever really existed on PC.