I like how Google/Android simplified the stack, regular (desktop) Linux solution is some kind of schizophrenic dream :) Lot of dependencies, especially when you have to switch between Intel<->AMD<->NVIDIA drivers, you may spend half a day cleaning you system from unwanted packages.
And ChromeOS uses Freon
Yeah - Google, Microsoft, Apple are big enough to convince other players to deliver them drivers for the API they prepare.
An excellent explanation, though slightly outdated. Mir “not yet in 14.04, but maybe in 14.10” (ha ha ha), no mention of amdgpu or using Glamor with the modesetting DDX on Intel GPUs.