People want to game, and a lot of gamers want Nvidia. The driver may or may not work, but if it has a reputation for maybe not working, people will decide again

People want to game, and a lot of gamers want Nvidia. The driver may or may not work, but if it has a reputation for maybe not working, people will decide against it. It also possible that people who find out the Nvidia cards are unreliable on Linux are making decisions over other systems where this shouldn't be such a big deal.