The FCC has moved to create a virtual duopoly in high-speed internet access, by deciding that local phone companies don't have to let competing providers such as Earthlink offer service over phone lines.
So your choice will be between your phone company and your cable company, which no doubt will, over time, learn to do the collusive-pricing dance without actually running afoul of the antitrust laws. (Whatever happened to the idea of moving signals over electric-power lines?)
One more reason to support municipal WiFi.