My prediction is that once the capability reaches contact lenses, it'll become mass adoption. The physicality of wearing a headset while walking or moving is difficult for lots of people, and tiring. Contact lenses weigh a lot less, and are less intrusive to others.
Of course, it doesn't come without pitfalls, but that's just my prediction.
I think glasses/goggles are less intrusive than contact lenses. Lenses are irritating and difficult to insert. It's also impossible to share contact lenses. I think VR is already pretty close with the Quest 2, to what it needs to be to get mainstream adoption. A little lighter, a little thinner, maybe 5-10 more years of iterative improvements and we'll be there.
I wore lenses for 4 years and couldn't stand it. So I had them blast laser beams into my eyes in an attempt to fix it, so that I never had to wear lenses again. And it worked!
My hindsight also shows me that I trashed the WWW as "yet another system like gopher and WAIS that probably won't amount to much", so I should not be trusted with predicting the future, or even possibly the present.
Of course, it doesn't come without pitfalls, but that's just my prediction.