There are viable transition mechanisms other than dual stack, that put some kind of translation layer between protocols, rather than expect native IPv4 connectivity on all hosts.
This is perfectly viable, and is how many mobile networks handle IPv4 (ie. there is no native IPv4 on the handset at all), and how many cloud providers are handling it these days too. You have to do NAT at the border anyway, why not NAT to/from an IPv6 address?
The adoption problem doesn't have that much to do with the technology, it's simply that it provides little value to most individual entities participating in the network, even if the benefit in aggregate is clear, so it's difficult to achieve the critical mass to make it valuable. It's the same thing behind climate change and so many other societal issues.
This is perfectly viable, and is how many mobile networks handle IPv4 (ie. there is no native IPv4 on the handset at all), and how many cloud providers are handling it these days too. You have to do NAT at the border anyway, why not NAT to/from an IPv6 address?
The adoption problem doesn't have that much to do with the technology, it's simply that it provides little value to most individual entities participating in the network, even if the benefit in aggregate is clear, so it's difficult to achieve the critical mass to make it valuable. It's the same thing behind climate change and so many other societal issues.