In the mobile phone space Google had zero presence of its own (aside from search). That's what I meant by "from nowhere". We all knew Google only as the search/e-mail company prior to that point. Would you have expected a search company to create a mobile OS that has such an impact?
And what's wrong with that? Google helped make Android enticing enough for those companies to decide to run with it. Like you said, these companies could have picked any OS at all. But they chose Android on its merits.
If Android's merits didn't fit, wouldn't those companies have continued to use their current OSs?
I'll give you that one. What I probably should have said was accelerated its death.
Nothing worth getting bent out of shape to disagree with here. I will agree with your statement on WP7. At the moment, it doesn't seem to have gathered traction yet. Then again, Android was the exact same way when it first started out, so anything's possible.