The way to do this would be by rolling out its ow national broadband service:
The rumors have been rife for a while. Google has quietly been buying up fiber and deploying infrastructure. Many people have speculated it's in preparation to roll out a global backbone.More info at Networking Pipeline.
And, of course, Google in in the running to provide WiFi for San Francisco, and will be providing it for its home town of Mountain View, as well as several other locations.
So what's new? Google recently posted a help wanted ad for Strategic Negotiator, Global Infrastructure.
The person they hire will negotiate bandwidth and peering deals all over the world. If Google had plans to roll out a national broadband service, these negotiated deals are exactly how they'd do it.