After reading through the comments, I come to the cynical conclusion that it is actually Google who is selling Microsoft products (if you consider IP a product)

After reading through the comments, I come to the cynical conclusion that it is actually Google who is selling Microsoft products (if you consider IP a product). They are not selling it by taking money, but they are distributing Microsoft's products inside Android so that Microsoft can go along and collect the money from the ones who use Android to sell their phones. So what is the "commission" that Google takes for selling Microsoft's IP? Well, it allows them to sell their own products which is advertisement. And why are the phone manufacturers willing to pay to Microsoft? I guess because they figured out that it is cheaper to pay Microsoft if it allows them to sell more phones. So it is a win-win situation for everybody except the end-costumers who buy the phone. As I said, this is just a cynical view, which might explain that nobody is not yet going to court.