cool idea but to execute it will take lot of approvals like you mention. High speed internet price might come down considering the cost the service providers are currently have to spend in order to establish a new coverage to the areas that are hard to reach at the moment. But on the other hand there will be issues for the places that are already coverage. And also there will be some issues based on regional legal requirements.
Idea is great and hope that we will see in action in near future.
Cheers!