Retention is always tough for new technologies. I remember when 3D printers were having their big splash and people were buying them like crazy, once they did a few prints it lost all the allure. Same thing with VR, I'd imagine.
John Carmack gave a really interesting talk a few years back when he talked about how the biggest opportunity for Quests was to get all the ones in a cupboard out and being used.
https://www.youtube.com/watch?v=sXmY26pOE-Y
(Disclaimer - I have a Quest 2 in a cupboard.... )