Canonical and Ubuntu rely on the work of others. The other companies have far more control. For Mir Canonical needs EGL, but Wayland needs this as well. The patching within just their distribution is possible, but then Mir will be ignored by developers not using Ubuntu.
Anyway, would be nice if you don't assume all kinds of things about me. E.g. starting about "The youug'uns" is funny and inaccurate. Probably you'll say that despite replying to me that you didn't mean me, but then it is a bit meaningless to include that tidbit, no?