It remains to be seen whether the general public, a decent chunk of which seems to be ready to spend hundreds of millions per year not to have to wear glasses, will find enough value in AR ones to let them take up real estate on their face. And what I feel is that people will increasingly want to be less and less feeling like they're constantly being pushed notifications or screens, or even technology in general. There is plenty of great stuff that can be done with AR glasses, but I have yet to see even a concept for a general public product that can break through ethical concerns and social acceptance without diminishing the visual AR value component to such an extend that it becomes mostly pointless. IDK, for example, how can we have AR without a camera system on the glasses, and that's already a pretty major ethical and social barrier to climb for a general purpose, ubiquitous and all day pair of glasses.
You forget one location though, that's already seeing OK consumer acceptance - all the more so since the introduction of true wireless earbuds : the ears. While I doubt that people will find it socially acceptable to be wearing all day small, discreet earbuds, particularly during extended social interactions, even in transparency mode, I can see a form of partial ubiquitous AR coming first to the audio medium instead of the visual one. Improve the APP's comfort and fit, battery life and transparency mode, and voilà you've managed to put a speaker in people's ears they can easily wear for 8-10 hours a day. It could prove quite something if I were to visit Japan in several years and hear all the public announcements in the metro rapidly translated to English on the fly (Google is bound to get there at some point) ...
