I'm a systems engineer who spends most of my time coding, and I have a quest 2. Unless apple has somehow fixed the big issue of VR headsets having no peripheral vision (you have to move your head to see things not in the cone in front of you, can't just shift your eyes) and relatively shit resolution, using a VR headset as a large screen/screens for text content would still be headache inducing.

The amount you'd have to zoom the text in order to be readable for long periods of time would make it unreasonable to try and code in.

I would love for VR to actually work as the movie idea of an infinite desktop, but in my experience it really falls short in that use case. I'll admit, a quest 2 is a real budget headset, so maybe higher end ones work better for it, but the one high end headset I've used had the same limitations.

Hm, not sure if I can agree here. There may be a handful of people like that - but that is not the market worth developing as far as I can see. You would normally either travel, or spend your time in front of 3 screens full of text. Also, having anything on your head for a long time (if you are coding, for example) is tiring. Even simple sunglasses are, not talking about a bulky headset. And, as someone also mentioned, there really must be an excellent screen for your eyes not to bleed after a long session of reading. Never tried this headset, but have serious doubts. Watching a movie is different, but at this price point you are likely getting a royally good home set up, so yet again, travel only. Again, a niche thing.

Then there is some CAD stuff, but cannot comment there. How many people in the world need that, anyway?

This leaves games as a real (though still relatively niche) market, yet to see what Apple has to offer there.

So, as I can see, if Apple wants a new big thing, we are still waiting for a killer app. And a breakthrough in tech, of course.