Interesting article about what constitutes that elusive "Killer App" everyone is always searching for. I like the notion of a Virtual Reality rig as an appliance in the home, like a microwave or an upright piano - something that is discretionary but always useful when needed and called upon; it serves a purposes, rather than merely entertain, like a movie or video games.
The timing of usage in VR is different than traditional media, and so should this consideration in its development and design.
Check out the article that inspired this post:
Constant Change Media - Are VR's Killer Apps Hidden In Plain Site?