AWS will start charging for most IPV4 addresses next year [1]. And I'd expect other cloud providers to follow AWS' lead here.

This could provide the needed push for the Industry to switch.

[1] https://aws.amazon.com/blogs/aws/new-aws-public-ipv4-address...

GitHub is the most annoying one. It's funny, given how many parts of IPv6 stack are developed here.

The interesting part is that GitHub has already assigned[0] IPv6 addresses to a lot of endpoints of its stack. They just haven't created any AAAA record yet. Perhaps they'll add support for it soon?

[0]: https://api.github.com/meta

The big ones do. Small ones are small for a reason.