I don't think Google is ever going to be willing to enter the carrier business. Although they hinted 1 or 2 years ago to a system where the global carrier would lose most of there power. It was phones that would operate on unlicensed frequencies or locally licensed frequencies. The phone could register with what is locally available by having a GPS and a database of operators by locations. It was a neat idea and I could see Google pushing this as a standard to be implemented by different operators. Sadly, I can't find a reference to the post I saw back then. Google certainly doesn't seem to be pushing this solution currently.