Thera are a lot of factors that ensure AR will never really lift off.
Firstly, Apple has decided to not use touch screens on their computers as they say, the ergonomics are bad. Yet, holding your phone at arms reach for extended periods to be able to use apps, that's perfectly fine. Um, no, it sucks just as much.
Using your phone is a private thing. That's why it has been successful, people can stay in their personal space and close that space even more. Waving your phone around to see stuff will never catch on, just as little as Siri or any assistant has, it's not practical to keep babbling to your phone. That's also why people talk less and less on the phone and text/imessage/whatsapp/whatever.
Huge malls keep popping up and more and more people visit and shop, shop, shop. There's absolutely no way people will sit at home fiddling with AR apps to try to buy stuff. Just no.
If you can't envision that cheap IKEA armchair in your living room, that AR app isn't gonna make the decision easier for you.
As someone said, this is a hammer looking for a nail.
Sure, when we get here it will be something completely different:
I really hope I'm gone before that will be what life on earth be like.