IPv6 is becoming increasingly common here in Asia (I'm based in Thailand but travel a lot around Asia). For context I have used 3 different ISPs here and all have dual stack, both my cellular connections have also been dual stack.

This has meant NAT is less of an issue for native IPv6 endpoints, including P2P.

Hopefully when IPv6 is finally widespread in US/Europe we will see stuff taking more advantage of this fact.