Many developers can't even develop for it because of the vetting process. One can't just sign any eye popping license and go, no, one has to kind of go through an opaque process with non disclosure agreements on the way before one can lay eyes on the SDK, if ever. Not clear how it works. Can't even remember how we got there. Invitation only?
It's not gonna go away, but it's also not going to take off ever. Many devs just don't care to develop for it, they don't even try.
(I guess I should have taken notes when I spoke to my fellow devs, in case you needed written proof)