SNI works except on out dated browsers. People with out dated browsers are not buyers ...
I don't think that is an issue. Google is making more work for a busy world -- that is a problem -- then beating on site owners because of packet sniffing (mostly by world governments).
So, this is really Google's way of making packet sniffing as difficult an possible (Google's real motivation). Google's second motivation is in reducing the number of websites that they will index -- most of the spammy or legacy domains will not adapt and die
