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.
