There's no competition to the Oculus go because nobody wants the Oculus Go.
I could see it being useful like, on airplanes or something, but I don't think we're at a place yet socially where someone could wear a VR headset on a plane and not look like a weirdo/pervert.
To jump to "weirdo/pervert" is quite a leap. Consuming 2D video in a headset that fits correctly (the Go is not adjustable in width) is much more relaxing and reduces eye strain in my experience.
As another commenter posted this has a lot of potential as a media consumption device (movies, moving comic books, spatial data) outside of the immersion or 3D gimmicks.
While I will concede VR is still, at it's best, in to it's toddler years you should still give credit where credit is due.
The form factor and experience for the first standalone, wireless VR device is above par and raised the bar. The price point is, IMO, still too high for fast adoption but the experience is unparalleled and, dare I say, revolutionary in its space and makes me very excited to see where VR is going to _go_ (pun intended).
Also watching / listening to ASMR on the Oculus Go in bed is a very relaxing almost therapeutic experience.