The ability to fork only exists in theory. In reality, Google already uses its dominant market position to prevent mobiles from being sold with non-blessed versions of android. The only ones who can realistically do anything to challenge this are the huge players like Amazon who can deliver their own hardware. That's not really 'open'.
I don't follow this. You say Google prevents the release of devices with non-blessed version of Android, but you then talk about Amazon who are in fact shipping a non-blessed version of Android right now. It's true that driver support for hardware doesn't make forking easy, but it is totally possible to fork Android and create a custom variant.
It's possible in the way that it's "possible" to compete with local ISPs - all you have to do is lay your own 50000 miles of cable! Well, Google, as a huge megacorp, actually has the resources to do this, but it hardly fosters a free and competitive environment.
Just because a company with a market cap in the hundreds of billions can do it doesn't mean it meets an average person's definition of "doable".
