Yep. Piracy.

www.bit-tech.net/news/gaming/…/1/

The PC right now is a fair amount different to what it was back in the day, with all the badly integrated video chips," said Cliff.

“Here’s the problem right now; the person who is savvy enough to want to have a good PC to upgrade their video card, is a person who is savvy enough to know bit torrent to know all the elements so they can pirate software. Therefore, high-end videogames are suffering very much on the PC.”