issue one, you see entusiast price reach 1000 euro+.
issue two cpu goes into 2000euro+
so we have a situation where you dont really want to upgrade anytime soon or ever. Most will just wait until next generation comes out and then buy a used card.cycle of selling new developed cards starts to slow down due to buyers start to wait.
GPU prices will probably drop off a bit once 10nm lands - for various reasons 16/14nm will be costly for both nVidia and AMD (not just in terms of the basic core production cost).