Fundamentally though, that's just the nature of diminishing returns. Of course the value proposition for the Quest 3 is far better than the value prop of the Vision Pro.
It's no different than consumer GPU's. There will be enthusiasts who purchase the GTX 4090 for $2000 but the average consumer is far better off buying something like a 3060Ti for $340.
My favorite example of this is a site called Logical Increments [0] that clearly shows just how expensive pushing to the next tier of quality is as you scale up.