Paying $1000+ for a standalone headset, even if you can play Half Life Alyx in 4K is still not something that will reach any proper market adoption. Unlike a phone, which you can use at all times, a VR device requires a ton of space, requires buy-in from developers (Apple's current list of games and apps that support VR is... right, zero. Planning to run your game on Rosetta + MoltenVK ?), etc.
It's not the whole computer. It's a computer that you can't really bring outside, that is heavily limited because haptics are still terrible (and will stay terrible). Do you expect people to bring their VR headset to starbucks ?