There is good chance for 360 degree 3d vr movies and movie like experiences to become a big deal. Who wouldn't like to see their favourite sport in 360 3d vr from their couch? Or have very well made clips of the next olympics for how it feels to be a ski jumper, hockey goal keeper, sledge rider,... And of course the porn industry is already there with high quality 180 degree vr clips. And virtual tourism to strange places and musems and whatnots. I wouldn't be surprised if the non game content becomes bigger deal than gaming content.
There is also push outside content creation industry like the nokia 3d 360 degree camera for professional movie makers. Not just something that was duct taped together but properly designed and implemented...
http://www.engadget.com/2015/11/30/nokia-ozo-vr-preorder-60k/
Perhaps 3d vr news is great ?
http://www.nytimes.com/newsgraphics/2015/nytvr/
best thing about movie content is that it doesn't matter much for the maker if the viewer is using rift, vive, morpheus or gearvr like solution. There is potentially huge market no matter if rift has initial high volume or not.
There is so many different ways to get 3d vr content that I think it's bound to succeed. But success might be quite much other thing than gaming and gamers.