I have 2 Oculuses and have the app downloaded on 5 devices at least.
Anyway, I feel like the popularity of Oculus is pretty limited. Unlike consoles, you have to be pretty physically active to play most games on it. I do think it's an excellent fitness device, though.
I think Google made a huge mistake discontinuing Cardboard/Daydream. They should bring it back. It really doesn't make that much sense to have another device when phones already are more or less as powerful as an Oculus anyway. Not to mention that the Quest runs on Android to begin with.