Only way is giving it for free with a desirable product, and offer software that is desirable. Maybe is more important than specs, for mainstreamness.

New revision of switch could come vr ready and with a plastic that holds the screen. Release same day as Mario kart vr. Sell it as cheap as possible. Make vr part of switch options(TV, tabletop, handheld and now, vr). Sell it as cheap as possible.
People would buy it even if not interested to vr. Some of them could became interested. If the software is enjoyable, consumers would designate the awesomeness to vr.

You think Super Mario Galaxy and Windwaker (GC version) can't run on Switch in VR?
People have already managed to run those games on OR via Dolphin, and Switch has already been hacked for VR
https://www.theverge.com/2017/4/30/15492252/nintendo-switch-vr-workaround-zelda-watch

A lighter revision of the Switch with a 1080p screen, always running in tv mode could unlock the Wii library for VR. Cute art works really well in the current VR headsets. Bright colors hide the screendoor effect. 3rd person VR works really well for platformers. It would be a good selling point for Nintendo's mid gen upgrade. Plsu bringing those games to the Switch would sell regardless of any VR mode. Star wars rogue squadron 2 in VR, yes please.

It'll be Sony that makes VR mainstream, like they made consoles mainstream, and blu - ray.

Yea it'll be interesting to see it grow like watching paint dry or grass grow. Maybe it will be in its second trimester when I'm dead.

Lmfao, which part Ninty stan? 

Edit: Ah, the mainstream console part, that is an actual fact. How many Nintendo consoles have sold over 100 Million? The Wii, which pails in comparison to PS1/ PS2 sales, and will be left behind when compared to PS4 lifetime sales. PS3 was the lowest selling PS platform and has outsold 95% of Ninty consoles! Nintendo might have existed before Sony, and influenced them to get into the console market, but that doesn't mean they expanded the market like Sony did. Even now Sony dominates, expanding into new markets, every gen. You might have a point with handhelds, but again, Apple/ Samsung took away that market from Nintendo lmao. Can't say the same about Sony's console market grip.

If sony can't nor samsung, why would Apple or Nintendo? Two companies that are smaller then so y and Samsung in terms off hardware sold.

We do not have the techbology yet that is necessary to make vr mainstream we are now at the magnavox odyssey stage of VR. The pre atari era. Vr can become indistinguishable from reality. So there is a very long way to go still. I think we will see a solid 20 million userbase in a decade.

Nintendo made motion gaming mainstream? Do you see anyone still using motion gaming? But no, Apple cannot make VR mainstream. It is too isolating of an experience.

I don't get where this idea that VR is isolating comes from. 10's of millions of people sit alone in a room playing mulyiplayer games with a headset on, with no connection to the people they are playing with. In VR the connection to the people you are experiencing it with in multiplayer is greatly increased. As the tech gets better, it will literally be as if you present in the same space talking, and interacting with other people online.