Many on this forum was buying hardware just for the sake of having the best hardware possible.
Most of those enthusiasts set their own price limit cap by buying the best in the mainstream segment and the best in the hedt segment.
Now that the mainstream socket uses a 900 USD CPU and the
hedt socket will use a 4 grand CPU, are those enthusiasts willing to spend this money to get the best?
of course they will, some one has to bear the cost of innovation. personally I wait 3 or 4 years before I build a PC to see what components actually work, and last. it's cheaper that way to, what would have cost $4000 3 years ago, I can build today for $1600.
Honestly I thought that the 3990 was going to be the cpu I was after but after learning more about the windows core count limitations I will be sticking with the 3970x. If, and this is a very large if, windows fixes the os to better support high core counts I could see moving that way.