I disagree. Hololens is used for plenty of custom applications in the construction industry. You just don't hear about them because they are pretty much inhouse projects, likely implemented on top of unity (hence low cost and simple to deploy).

Here is an example https://www.youtube.com/watch?v=gF8H_GAm8mM

No consumer killer apps yet, that is of course true. But I wouldn't see AR in any major way in consumer space - just like you don't have HUD displays in a large category of vehicles, even though they are critical to military cockpits.

Personally, I'd put money on the number of people using HoloLens outside of dev teams in applications like this being in the low hundreds/thousands, but would love to be shown data to the contrary. Cool youtube videos unfortunately do not really indicate anything.

But it brought a ton of clients in the door, so mission accomplished.