The whole problem with ipv6 is that earlier adaptors have not much advantages (while still having to support ipv4 anyway) whereas late adaptors will have it muc

The whole problem with ipv6 is that earlier adaptors have not much advantages (while still having to support ipv4 anyway) whereas late adaptors will have it much easier (better ecosystems, much less bugs anywhere else, problems are documented and well understood, infrastructure is tested, etc.). The incentives from the business side are just plain wrong. They can change when CGNAT causes problems. But they don't as long as other stuff is more important.