1) There are many domains that don’t care about single threaded CPU performance or CPU performance at all. I would say gaming is becoming one such domain

2) This might soon change if Microsoft and Apple succeed in their quest to push ARM machines to the consumer market. I can imagine than an ARM macbook is all that's needed to start an avalanche in adoption

3) Willingness can change easily :)

Other than the same instruction sets the other two factors can change in the 5 to 10 years that a console generation lasts.