I do so love the wild ideas of tech market theorists. People really believe that they're going to put smart glasses on everyone's faces? That they can fit in all-day batteries? How exactly do we type into this head-mounted beast? Will the contrast be remotely acceptable for movies? I don't think these problems can be completely solved for the majority of users.

You'd do much better comparing them to smart watches and second screens. That's where they can actually work.