I disagree. The approach that Canonical advocated for Ubuntu won't help Linux desktop. It would help, well Ubuntu which only becomes increasingly isolationist with NIH syndrome on every corner. Unity, Mir etc, etc. The list will go on.

Jolla for example help Linux desktop much more than Canonical. They actually work on improving Wayland. I.e. they push mobile Linux using components which allow sharing the effort with the desktop Linux. Unlike Canonical.