Before you say something else that is wrong. The licensing structure is Apache.
http://en.wikipedia.org/wiki/Apache_License
Google hold's the copyright, but it makes the source code open. It allows developers to change it, and redistribute it. It allows them to make the pieces they develop themselves (SenseUI, Motoblur) and label them as close sourced.... or they can make open source if they want.
It's a flexible Open source licensing structure that allows someone to build revenue from their own work....