Licensing would be challenging, but let's face it. With Android being so ubiquitous and can run on a wide array on devices, we're not looking at cellphones of like OS being more and more like PC's in their heyday.

If Android can run on OMAP3, OMAP4, Snapdragon, et al, it's just all about having an OS either scales well, is optimized, is easy to install and is easy to distribute; if not all aforesaid points.

We need to stop thinking about cellphones as closed off, planned-obselescence devices and start seeing them for the powerful devices that need to be as extensible and controlled as we see fit as our PC's that run GNU/Linux, OpenBSD, Windows, Hackintosh (stretch here legally, but bear with me), NetBSD, Haiku OS, et al.

Why not? More cellphones soon in people houses than PC's sooner than later. We should be able to control the OS too.