Having messed with VR/AR tech since the DK2, the Apple Store presence could be the killer app that VR/AR needs. The manual learning process of ordering special fit lenses, adjusting the headsets, etc would be a great fit with Apple’s store model.
Conversely the fact that you need special fit lenses and a store appointment means its going to be hard to test out and hard to buy. You're probably not going to be able to wander past the Apple store in the mall and take a quick peek in and play with the Vision Pro like you can with their other products like the iPad. Nor will testing your friend's necessarily be a good experience. Plus even in the U.S Apple Store's…
There are 270+ Apple stores in the US, I don't have the figures to hand but an overwhelming percentage of the country's actual population live within an hour of an Apple store. They are common, frankly.
I'm not defending the decision to require a store visit here, but lets not paint a picture of Apple store availability that doesn't exist. The number of people with disposable income in the US to purchase a 3500 dollar headset and actually want to buy one who aren't living under an hour from an Apple store is likely a very small list.