You can buy RX 6600, which is roughly 2x faster than 1060 and has 8 gigs of VRAM for 200 dollars[1]. If we take inflation into account, 1060 did cost around 300$ in today's money. So basically you are getting 30% more ram and 2x performance for 30% less money. In other words you are getting performance 20% better than GTX 1080 for 4x less money(launch price of 1080 was $600). And it uses less energy too, so TCO difference is even higher. And I'm not even talking about expanded feature set.

[1] https://www.newegg.com/gigabyte-radeon-rx-6600-gv-r66eagle-8...