Android is a double edged sword for the telephone carriers. Lots of app developers, lots of consumer interest, an iPhone competitor but the open source end of it means these roots and unlock kits will be very easy to come by.
I am hopeful that the open source edge doesn't cause carriers to cut back on their support for Android in the long run. So far the signs are promising that support will stay.
I'm still waiting for a release of Android for iPhone 3G/3GS.