Significance: The phase in Android’s life when its open source nature allowed it to gather its own momentum and unite a whole range of vendors around its platform is over. OEMs which saw an open platform, largely resourced by Google, as a quick and low cost route into the smartphone market have now reached that position, and need differentiation and greater control to continue to gain share. They are now fighting one another as much as Apple, RIM and Nokia, and that makes them less willing to play nice, and share revenue, with Google. As they introduce their own user interfaces and applications to Android, or even look to other OSs altogether, Google needs to compete in its own right…