What make one project superior to the other, besides your opinion? Open source is darwinian. If one project proves its superiority, development will shift and other projects will change. I would think that, as a hacker community, we could accept that.
It's not /exactly/ darwinian when one project is being driven by an organization with clout and corporate partnerships. If you're Nvidia/AMD/Intel, which project would you be more receptive toward throwing your weight behind? The rinky-dinky band of Linux hackers with good intentions, or Canonical?
What the manufacturers decide to do is critical, and I promise you they aren't taking some kind of meritocratic open-source approach to evaluating where to place their resources.
It is a reasonable belief. And I'm not criticizing you for having it. Still, this process has repeated itself for a long time. Its not always fast and the best doesn't always win, but its how things seem to work.
The most likely outcome is the Canonical toils away themselves on Mir, and everyone else works on Wayland/Weston. Maybe at some point Canonical decides that it's better to just use Wayland, but that's about it.
Wayland is already at 1.0, and has support from Valve, Nvidia, and AMD behind it. I don't see it disappearing soon. Especially since the implementation of Mir isn't even usable yet (while Wayland is).
Ok, I may have misread something, but I was going off of this[1], which was posted elsewhere. I could have sworn that a comment from one of the Wayland devs claimed that Nvidia, AMD, Valve were on-board (at least tentatively) with Wayland, but I can't find that post now.