The important market is when smartglasses replace smartphones as the dominant form of human computer interaction. Which will happen in the next 10 years.
There’s a lot of market research readily available, admittedly of questionable quality. But the more reliable weather vane is estimating when Apple will launch their smartglasses. Add 5 years to that for when glasses disrupt smartphones. At the rate Apple is buying up AR and VR companies you can expect them to launch in late 2019 or 2020.
But I can't turn my smartglasses around and show someone the memes I'm looking at. I don't see how it could replace my phone. Compliment perhaps, but having used Google Glass Enterprise I don't think it's as big of a game changer as you might think.