> They do not do that. It's illegal under federal law.
They definitely do. Our city has a franchise agreement with the incumbent cable provider; they're the only company allowed to provide cable television service. ~10 years ago a company called NuNet tried to come in and run fiber in a neighboring city, Hazleton, and both they and the city were sued by the incumbent for breaching the franchise.
The 1992 Cable Act made exclusive franchises illegal, but does not retroactively apply to pre-1992 contracts. Almost all of those contracts have since expired and been renewed as non-exclusive contracts under the 1992 Act. Hazelton, for example, granted an exclusive franchise before 1992, which expired in 2005: http://articles.mcall.com/2004-03-25/business/3517245_1_fibe.... The suit in 2004 was over the last year of exclusivity.
I imagine there are some 30-year exclusive franchises granted in 1991 that are still in effect. I don't actually know of any.
They definitely do. Our city has a franchise agreement with the incumbent cable provider; they're the only company allowed to provide cable television service. ~10 years ago a company called NuNet tried to come in and run fiber in a neighboring city, Hazleton, and both they and the city were sued by the incumbent for breaching the franchise.