[drdaeman]

5 years? Don't see any chance for extinction.

There are tons of non-HTTPS websites out there. A myriad of forsaken ones that are still running because no one had remembered to do anything to them, and a myriad of ones whose sysadmins just don't care about TLS at all.

A non-obtrusive "insecure connection" warning is probably going to happen quite soon, but I just don't see any chance of mass HTTPS migration besides the high-profile sites, newborn sites and geeks that would stand for the cause.

Otherwise, a pretty large fraction of the WWW is going to be lost.