Introducing HTTPS to existing infrastructures is easy. Just terminate it at some point. It also adds a big advantage to users that their traffic can't be read b

Introducing HTTPS to existing infrastructures is easy. Just terminate it at some point. It also adds a big advantage to users that their traffic can't be read by network operators. Introducing ipv6 is harder, as you need to change all your routing, logging, banning, etc. facilities to support ipv6. It doesn't add any direct advantages for users, as all ISPs still have to support ipv4.