Google has a plan to circumvent the problem of fragmentation of its Android operating system across the installed base by using its proprietary, closed-source Google Play Services. Play Services is a privileged service that runs on Android and provides the sort of functionality to applications that would generally be seen in operating system updates like cloud backup, remote wipe, push messaging, etc... This service can be updated silently and independently of the operating system and runs on almost every version of Android out there allowing Google to add functionality to Android devices without having to go through the OEMs so having an up-to-date version of Android is looking like less of a necessity."It might be worth noting that Google originally rejected copyleft in favor of permissive licensing in the name of giving OEMs and carriers more control over Android on their devices.

http://tech.slashdot.org/story/13/09...ogles-platform