Asymco on how Google’s lack of Android control affects their value chain
Google today is faced with the prospect that not only the devices (which sit on its OS) but also services and apps on top would choose to remain on old versions of Android. There is nothing to stop them from doing just that. Unlike Microsoft, Google does not enforce licensing terms for Android. It is at the mercy of the value chain.
via asymco.com
The article also points out that even if Google wanted to stop the above scenario, they do not have the license terms to permit it.

