The last one to pay up is Quanta, the giant ODM manufacturer that makes the Amazon Kindle Fire, among numerous other gadgets, but Amazon already has a licensing agreement with Microsoft. The exact terms of the deal are not disclosed, but at first Microsoft was knocking down smaller Android device makers, then stepped up to HTC, and finally got Samsung to contribute. It's now moving to ODMs and says Quanta is the second big one it scored licensing deals with:
Unfortunately we can't know exactly how much Microsoft is making now off of Android's popularity, but we wouldn't be surprised if it surpasses the amount it will make from Windows Phone for the foreseeable future. It would also be interesting to know how much Android device manufacturers have to pay now in fees, compared to licensing one Windows Phone copy.