Bad analogy. Current Linux is not a theoretical system, but a mature industrial quality one. The fact that Android "jumped" first into the mobile sphere doesn't mean that it should be kept there despite its shortcoming or should be used as way forward. Surely someone will stick to it given its current popularity, but regular Linux will move into the mobile sphere as well, and since its efforts will be shared with the desktop - it'll server better purpose. Android will remain selfish and separate. At least so it seems.