I think the first adoption wave will be in video games. As much as people like to think that game platforms are dieing (vs gaming on mobile), this seems like a a great augmentation to Xbox. These types of things seem to take a long time and then explode (think Wii, and the cameras on Xbox 360) and then normalize. I think it will catch, there just hasn’t been the right mix of software/hardware and use case put into the market.
I think MMO video games is probably the right kind of lean immersive experience and that amazingly catchy MMO game with VR has not appeared yet.