The existing duopoly have deep pockets and could protect their duopoly by also laying fiber anywhere that a third company tried to start up. The new entrant wou

The existing duopoly have deep pockets and could protect their duopoly by also laying fiber anywhere that a third company tried to start up. The new entrant would not be able to maintain a profitable competitive advantage in any market. Comcast has upgraded its service in the cities where Google Fiber has been rolled out.