Mark gave the example of Peg Patterson Park Sydney becoming a major Pokemon AR site, changing the real space. He then showed some smart specs.without really happening. I found Microsoft HoloLens much better than Google Glass, despite having a much bulkier headset. However, even with something which looks like normal glasses, there are considerable social impediments to the technology.
Much to everyone's surprise, I suggest the last big thing we had was Zoom: old fashioned video conferencing done a bit better. The next big thing will be something like that, not augmented reality. It might be, for example, vaccination certificates with QR codes, which allow us to travel.