There is an interesting unbalance because Comcast has so much leverage by owning the last mile, they can push around Tier 1 providers. I'd like to fix that, mostly by creating a public policy around municipally owned Layer 1 infrastructure between customers in their cities and a city exchange building. Conceptually it would be no different than the city owning the sewers and outsourcing the water treatment plant to a contractor (or two). Creating a new "ISP" would involve installing equipment in the City Exchange(s), providing compatible customer premises equipment to subscribers, and then patching their 'port' at the City Exchange to the ISP's gear.
Its going to be a long conversation :-)