Dang, that's a big assumption. As someone who's been a researcher in the field for over a decade, I definitely can't make that claim.
Valve even says the total concept may be flawed and they are comfortable[1] with complete failure.
Three (of many) big things to overcome:
* Lock in. People watch movies in the dark with other people. Head lunchbox is isolating and annoying.
* Transmittable skin infections.
* Stereo depth eye tricks messing with focus makes almost everyone sick and can have huge unknown effects on the brain, balance, and perception
We don't have light fields[2], easy holograms[3], or laser scanning projectors on a chip[4] yet, but we might next week. Very probably VR at current is the stone axe we are using to invent the steel one. In almost every practical way it's broken, even if useful. We have no fucking clue what the final form is going to look like.
[1] http://www.bbc.com/news/technology-38992294
[2] https://www.magicleap.com/
[3] http://www.red.com/hydrogen
[4] http://www.bosch-presse.de/pressportal/de/en/mobile-world-co...