This is about making a virtue out of necessity. There is no way a small player launching a native SDK now can attract enough developers to not look like a total

This is about making a virtue out of necessity. There is no way a small player launching a native SDK now can attract enough developers to not look like a total joke beside Android and iOS (or even Windows Phone). Mozilla controls and understands the vital parts of their platform, their rendering engine and JS VM, they can concentrate their work on making them performant enough to compete and making sure that the long run will come sooner rather than later. So yeah, I'm impressed by them having a narrow focus and playing to their strengths rather than making something that is just like Android, only with no apps.