Having just realized my internet provider, cox, does not actually support ipv6 for the 2 million plus subscribers in my state I think it is safe to say that ipv6 is dead and will never take the place of ipv4 in our lifetimes.
Don't get me wrong. They say they support it, they have lots of PR that says the support it but in fact as a subscriber they do not.
Mine had some beta program years ago. You had to find a number to call which was hidden away in a locked filing cabinet hidden away in a disused lavatory.
They were purchased recently and maybe there is hope now.
Cox has had ipv6 for quite a while. Hell for a while they kept shutting down my ipv4 leaving me only with ipv6. That was fun to get through tech supports head. Took three times of that happening for a day or two before I finally got to a level 2/3 tech that at least understood what I was talking about.
The ability to launch a public-facing, commercial service and pretend like IPv4 never existed and you don't have to worry about it at all? Probably not within our lifetimes.
I am not sure about that. When IPv6 support nears 95%, the pressure will be on those few ISPs to give access to those areas inaccessible from v4. Think of all these websites that need to be cheap and are happy enough with reaching 95% of the audience: blogs, small businesses, anything education related, etc. That should help going from 95 to 100.
Don't get me wrong. They say they support it, they have lots of PR that says the support it but in fact as a subscriber they do not.