velocityg4 :
I don't think it will be until it is standardized and standardized in such a way that developers can simply make games and have them work on VR headsets and monitors/TVs without much added difficulty.
Adding TV/monitor support to a VR title is one thing, but having automatic VR support for a conventional title is not going to happen.
VR adds a lot of considerations that don't exist, in the conventional authoring process. Things like minimizing motion sickness, ensuring an acceptable minimum framerate is maintained, and that OS and menus are legible, comfortable, and easy to use. Just for starters.