I don't think those are really comparable. Spending a ton of money on a home theater is a large and static purchase. You put it in your home, and that's it, you can't move it easily or adapt it much. The Vision Pro, on top of having other functionalities, lets you have that home theater experience anywhere. Want o watch in bed? on the couch? outside on porch? waiting at the airport? People spend a lot more on phones because of the portability aspect.