Open source has nothing to do with it. First of all, these devices ship with Google branding. There is licensing and restrictions involved. Secondly, I'm sur

Open source has nothing to do with it. First of all, these devices ship with Google branding. There is licensing and restrictions involved. Secondly, I'm sure google owns the name "Android", much the way Mozilla owns the name Firefox. You can fork it all you want, but you can't call it Firefox. Third, I'm sure Motorola and company get it under a special negotiated licence. They would never want it as GPL, as that would mean they have to release all their code. I don't know the details, but those seem like three very solid reasons why they would have to play by Google's rules.