Indeed, the whole idea sounds very one-size-fits-all. Rock concert? Maybe, they've done it in fortnite, but once you've done a few bobbing around alongside other avatars it's all going to get samey, and you're still listening on the same tinny speakers. Cinema? You go to a cinema for completely different reasons, we've been able to watch movies at home for decades, we can now watch pretty much whatever we want, cinemas are still open. Doctor's appointment? Remote consultations are more common now, sure, but they need to look at your actual rash or whatever, your cartoon avatar is pretty useless for diagnosis.
What a lot of this favours is companies with the clout to employ the big teams needed to create 'experiences'. From nvidia's point of view it sells chips.