Because it requires greater integration. For VR the whole environment has to participate. At least if we’re talking about VR glasses that you can wear outside, every store, road, building block and what not should provide information. Who would create all that info, and for what purpose. Adoption is non-existent. There is no platform to submit your data. All we have is the interface. If you’re to wear them only inside then all you can do is the things you already do with a slightly modified UI. Which defies the purpose. I don’t want a virtual keyboard because I get no feedback from it. Virtual screens might be good if I’m in a hotel room, but then again I’ll have my laptop which has better interface. Text reading is an interesting use case but what happens with eye strain if you look at those screens for prolonged time periods. And by the way, what happens if you're wearing eyeglasses? Will they fit?
Perhaps they can find application is e-commerce. Sites could start building virtual stores and you get a feeling that you’re browsing wardrobes. I don’t know if that’s a thing but it kind of makes sense as a use case.
I am also not too optimistic about vision pro’s success, but regarding your glasses question: you would order specific lenses for it. They may even do that inside app stores from what I’ve seen in the video? Hopefully it won’t add an extra charge as lenses are expensive.
Perhaps they can find application is e-commerce. Sites could start building virtual stores and you get a feeling that you’re browsing wardrobes. I don’t know if that’s a thing but it kind of makes sense as a use case.