Say what you will about Apple, but they've got a focus that allows them to execute a new idea better than nearly any other company. Watching the Google keynotes, it seemed everything they did was a reaction to Apple. Just because you paste "open" on top of all you do, doesn't make it any different than what Microsoft has been accused of doing, and that's shadowing Apple.
What open means in this situation is that Apple (or any other company) can copy Android OS for free, make changes to it they don't have to share, and put their own GUI on top that they also don't have to share.
You know, just like when Apple copied FreeBSD to make OS X.