One-Page BS: VR is not so attached with Smartphones
In comparison with smartwatch / band, VR does not really attach to smartphone – from 2015-2018, the attach rate is virtually none (less than 1%).
Conclusion: It is easy to enter smartphone VR segment, and they are cheap. Competition is furious, additionally smartphone buyers not necessary the target consumer of VR. Thus, keep developing and releasing cheap smartphone VR is not a long-term thing!