the oculus quest 2 runs android and costs ~$500. Apples native code and ability to code for a a single platform would enable them to get the same experience at reduced specs.

I’d wager the current iPhones chip is more than capable to exceed an oculus quest type experience.

PSVR works really well considering the very low spec (when compared to competitors). I think there's a lot more wiggle room than you'd think, depending on the application.

You don’t think. How many units did quest and quest 2 sell?

Spec is what Apple shines. They have seriously great mobile SoC.