> It was also predicted that the address exhaustion problem would be averted, in fact that was the purpose of v6. It failed to deliver.

It was averted: how do you think we got several billion smartphones connected to the Internet? Do you think that would have been practicable without IPv6?

Comcast—not even mobile—had to move to IPv6 on their landline ISP business because they ran out of IPv4 addresses for TR-069: they were using multiple 10/8 networks in different regions NATed to hide them from each other. IPv4 became untenable.