Motorola s trying but ultimately doomed to failure I suspect so I dont really conside that one.
Samsung Galaxy S III yes a competitor but still cheaper than an iPhone and in unit terms is unlikley to be where the real Android volumes are.

No one really knows how much MSFT is charging. I suspect that the headline is $15 but no one is really paying that. Whatever they pay out I suspect they get more back in terms of marketing and other support (incl access to Android patents (via Danger)).

I hope your new path goes well. A few comments.

It is hard to believe that Android not the main iOS competitor. Look at the Sasmung Galaxy III and Motorola Mobility primely targeting Apple high end marketshare.

Microsoft’s problem is what market are they in? Charging $15 per OS license with a shaky value prop and a different UI [maybe even better] is difficult — maybe just because it is so un familiar to the user on the UI and most handsets guys are so un interested in paying for an OS when you can kind of get it for free [especially in the Asian mentality].