It's so easy there are probably a dozen apps that do it on Quest and other platforms. I sat in a theatre with 15 other people the other day and watched Jurassic Park in 3D the other day on my Quest 3. It was cool.

So why isn't it happening with Vision Pro? Because Apple hasn't shipped proper co-presence features. Vision Pro lacks a proper Avatar system like every other platform has, so they can't have apps like this, ergo they are left entirely with trying to convince people that solo experiences are a valid value proposition, all the while attempting to sell their headset as non-isolating.