You probably could if Android weren't intentionally constrained by Google to prevent it. That's what fsflover is trying to point out: Android is more of a television firmware than an OS and counting it like a PC OS makes very little sense because you can't use it like one.

EDIT: I think you still don't understand. It doesn't matter what hardware Android runs on it's written to be appliance firmware. Even if you put it on a laptop it just turns the laptop into what is essentially a television.