The site doesn't track CPU/GPU shipments for PC players. The site hasn't tracked Ouya, NES & SNES mini nor the Playstation Classic numbers and, back in the day, it didn't track OnLive or Gaikai.
I don't see why Stadia or the Apple thing should be different.
Please excuse my bad English.
Currently gaming on a PC with an i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070
Steam / Live / NNID : jonxiquet Add me if you want, but I'm a single player gamer.