I'm lost, isn't THAT what open source means? Having access to source code? (Witch you do on Android)
Saying that Android is Open Source doesn't actually make competitors to "Google Android" viable or numerous.
Tell that to Chinese Android manufacturers.
Apart that your comment has nothing to do with Android being open source or not. it is irrelevant if a fork is competitive or not, AOSP is still open source
There's a limit to how many turtles you stack.
I can give you a link to the AOSP repository.
If iOS and OS X are open source in the same way than Android, then you can give us a link to the repositories, isn't?
Can I fork OS X and make another operating system based on it?