There is a very large growing gaming market for short-ish games (2-3 hours of gameplay) to mid-length games (12-ish) that are all about immersion on various levels while being first person. I think VR will head in that direction since most of those stories are about screwing with your head anyway. Games like SOMA, Firewatch, and Alien: Isolation, for instance. Hell I'll even throw in the Chronicles of Riddick: Escape from Butcher Bay in that mix. I think these types of games will be the real drivers of VR gaming markets, not just another Wii or Guitar Hero like it is now.

Those game can also be made in dual compatibility with flat screen support, so they can sell two interfaces to it. Much like 3D movies have a 2D version, which seem to be lasting much longer than I expected.

Also, it could play off of 3D movies and end up with a way to play 3D movies without buying a ridiculous TV and player for it, making them last longer.

I've always wanted to pause a movie and walk around the set. You could turn your living room into a digital theater, shakespeare style. Pause, walk around, etc. See live concerts streamed to your living room stage.

Obviously I'm not buying one now, they are ridiculously expensive with little payoff at the moment, but if they do things right they could take off.