Moultonborough has a Time Warner franchise. Center Harbor has a Metrocast franchise. Theoretically, a "cable company" competitor could come in. Practically, won't happen, because stringing more wire for the town footprint would be cost prohibitive. If Fairpoint were bought-out by a cable company, that would be an interesting!
Also, cable companies have legal and market constraints on their target market; e.g., Time Warner gets the Maine stations. It does have a couple of Mass. stations however.
"Address" is not the determining factor for cable (might be for satellite). It is the cable company franchise of the town.
Broadband (internet) is not bound by the same Federal and State laws, no matter the medium! So "streaming" is a different approach to watching TV. In my opinion, the future of TV watching etc.