Competition usually causes improvements in competing entities. However, this time, it might hurt. You see, there's a compatibility issue. The display server ha

Competition usually causes improvements in competing entities. However, this time, it might hurt. You see, there's a compatibility issue. The display server has got to be 'supported' by everyone, from applications, toolkits, desktop shells, righ down to the GPU drivers. That's why the wayland project took so long. Creating a display server is one thing, adopting it on the whole stack is totally different. Free software, specially on the desktop side, simply lacks the manpower to maintain support for multiple display servers. If Mir was a drop-in-replacement for Wayland, noone would've been mad. But this situation may cause a huge fork in desktop applications, shells, etc. Ubuntu is on its and the whole community has adopted Wayland. Im sure sooner or later they will abandon Mir (just like Upstart), because Ubuntu is too small to patch everything just to support Mir.