I think the simple answer is that the Quest 3 will not deliver a roughly similar experience, quality-wise.
My gut feeling is Quest 3 will be more than good enough for most people/use cases, and people will be more than happy to pay 7x less for what is - at the end of the day - basically the same experience.
Vision Pro looks like a better version of HoloLens of yesteryear. Doesn’t really seem all that groundbreaking to me, just more refined.