Too true, but at the same time... gamers didn't disappear. The market is still there.
Sooner or later, someone else will fill the need. That may be AMD, it could be Intel if they just focus for more than a year, or it'll be some cheap Chinese GPU from a company you've never heard of. (Likely named by mashing the keyboard while capslock is on.)
It's like how the mainframe market is bigger than it has ever been, despite being an irrelevant rounding error in the minds of the "Wintel" server providers, cloud vendors, etc...