Just to explain you a bit more of why i think it will happen:
First you can't play games where you have to move with a controlled. You automatically get motion sickness after 20min. So that only leave you by games where the camera doesn't turn with the controller but only with your head
Second, wii motion controller can only be used for some games. It's the same for Vr headsets, people get tired of it and don't want to use the headset anymore. The same happens with oculus users.
Next, like wiiu tablet. You can't use 2 helmets at home to play 1game. Even if it's possible. It's way to expensive. And what about the kids? Nobody can see the game at home.
Next. Nintendo failed to create libraries for handheld and console. The same will happen with console and Vr. And Sony will specially focus all attention on their Vr system.
People will get tired of it and again will stop playing it and going back to console with a standard controller.
The only ones that can benefit is Nintendo if they don't bring vr with NX
Don't get me wrong, I love all Innovations, even from Nintendo. I've an oculus already for 2years, I'm talking about experience. The first year sales will be good like the wii, but it wouldn't last long.
It will work good on pc for p#rn and some other not gaming stuff