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.