Google is mainly working to change the status quo and standards in any niche they enter.
For the phone industry, they were wanting to prove that an OS doesn't have to be closed, and that phones can do more in America than they were at the time. We are still a decade behind the Japanese in terms of cellular capabilities. They've been ordering over their phones, controlling their home, watching TV, etc. years before we were.
Google saw Apple having a monopoly in the market on the new Smart Phones when the iPhone came out, and how Apple was "controlling" how it developed, and wanted to shake up the market.
It has. If Android wasn't out, do you really think the FTC would have passed a bill saying that we have the right to jailbreak phones? No. They played a big part in showing the FTC that phones have to be open in order for us to push more innovation and not be confined to just what the manufacturer gets around to providing.
Google doesn't need to be a polar figure in their niches to achieve their goal of shaking up the industry for the better. They are doing just fine.
If I owned Google would I go about it differently? Yes, but then that culture wouldn't be Google.