Many, many years ago, long before AWS was ever a thing, I posted on Slashdot about how there are problems with the IPv6 rollout. Basically that it should have been aggressively done in the 90s as a simple increase in address length and not try to fix every goddamn thing wrong with IPv4. Not doing that meant being stuck in a decades long rut with adaptation.
Someone accused me of being a shill for the telecom industry who wanted to profit off the shortage of IPv4 address space. I mentioned this to someone who I consider the smartest networking guy I know, and he thought that was dumb as hell. IPv4 causes more headaches than it's worth for those telecom companies to try to astroturf Slashdot or anywhere else.
And yet, now we're here with Amazon actually making good on the premise, if not the actual astroturfing (yet).