PC has always stood for personal computer. It's only the media (and people who derive their computer knowledge from the media) that has oddly conflated PC with a Wintel desktop. Video game consoles, laptops, tablets, and cellphones are computers that you own and only you use therefore they are PCs. It's always about the intended use of the PC. Flops/cm^3 is increasing but the human finger is not decreasing in size; tactile feedback has not become obsolete; and large screens are more useful than small screens. Desktops will always have a place in this world not because they are more powerful but because they offer a superior working environment.