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've been wearing lenses for 15 years and do not think they are difficult to insert or irritating. But it does take some getting used to.

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.