If I don't need external monitors, I don't need my large desk, and I don't need my home office, which adds like 100k to the price of any home I'd consider. I'd just work from a bedroom, a closet, or my deck if I had this.
It would be amazing if I could use this to do more work outside, while benefitting from a larger screen without glare, even though "outside" might be watered down a bit. It would be excellent for nomading or work/entertainment from a hotel room.
This could be a great way to regain some privacy and focus in an open office environment, plus be able to personalize your setup. A digital beach backdrop is better than seeing my coworker scratch his crusty scalp 2 feet in front of me.
The benefits for air travel are obvious. People already swaddle themselves with large noise cancelling headphones and zany neck pillows. I don't think this would be weird plane at all. I'd kill for an immersive 4k display over craning at my phone or relying on flaky seatback entertainment.