Working prototypes trump all theory.
I heard all silicon valley gurus stating they were "bearish on VR, bullish on "AR". This proliferated as a mantra throughout the industry. I thought they were wrong then, and believed the opposite - because I had a working VR headset that was awesome, but had only heard somewhat meh things about existing AR prototypes.
Until great AR hardware comes out, I'm still sticking with the same opinion.
But it is still a less compelling proposition than VR. The main market is games where seeing the real world is kind of pointless. Good VR is much more immersive, and being taken to another world is much cooler than seeing some floating planets or fish or whatever in an office (even though that is cool).