Sex and violence
If your product ticks one of those boxes then expect sales to go exponential.
So for VR i think part of the answer is interactive porn, where no longer are you at the mercy of whoever is holding the camera, as you can pan around the scene and focus on the angles that get you hotter and botherederer. That and finally removing your troops out of the firing line by letting them kick ass from a comfortable AC barracks.
Lets hope these two "advances" don't get confusingly intertwined in some nightmare snuff scene where Mr Garrison gets his wish to fuck 'em all to death.
Then again, watching daesh going out in a spectacular bang would be compulsive viewing.