This isn't an attempt to expand their influence, but a frantic effort to mitigate the serious fuckup they have done in mobile space up until the end of last year: Android platform fragmentation. Both hardware and OS versions are far too diverse to present a coherent development platform. This is the sink hole that swallowed J2ME, Palm, and almost ingested Windows Mobile. This is exactly where Apple took the opposite approach - one screen size, one input type, one memory size, one CPU, one OS version. They bumped up CPU and memory recently so that makes two platforms - a newish and and oldish one, as smooth a transition path as there could possibly be.
Google is now trying to take all successful apps and have them work well on one "golden standard" platform which is Android 2.0 and Nexus One/Droid. If they are to have any hope of avoiding the fate of J2ME they will have to herd a lot of cats - both developers and OEMs - towards something resembling an actual uniform platform.