It's the same story for every VR headset. Buy it, be blown away for a few hours/days, then never touch it again. I did it too, with Oculus Go. The only exception is for gaming, but Apple just doesn't know anything about that. Honestly I'm blown away that they sold as many as they did, but that's Apple marketing for ya, I guess.
It was insanely overpriced, and so obviously intentionally so. Sell a headset that gets plugged into a Macbook for computation and you'll sell quite a few more. It'll be lighter, cheaper, smaller, more comfortable, and easier to integrate into your workflow. But of course that would break Apple's cardinal rule of making 2 products capable of the same tasks. Same reason why your MacBook will never have a touchscreen and your iPad will never drive 2 displays or run MacOS apps or why they stopped making the 12" Macbook.