I am currently a web developer but I am very aware of everything shifting towards AR/VR in the near future. Probably a future "web" site will have a VR version of moving menus. It seems to me that Unity will dominate this space and I am thinking of taking up lessons so that I am not left behind in the next internet era. A-frame doesn't seem to have great prospects imo.
Thoughts?
AR, on the other hand, MIGHT get some traction, but I'm not sure how. AR currently adds another layer of abstraction ... that's one layer too much. There should be something where it adds more use than the additional layer of interaction takes. I personally like the IKEA App where you can visually place furniture into your AR room, that's pretty need and helpful. Other than that (and gaming of course) i don't see any applications for the web.
Applications for other things like "way finding" or "place something in AR (like an electrician virtually places the markers where to install outlets) might come if there is more benefits than "the old way".