While Google's (NASDAQ:GOOGL) solution to cable has been a huge success in the limited markets in which it has been introduced, questions remain as to whether it can compete with the major cable companies like Comcast (NASDAQ:CMCSA) and Time Warner (NYSE:TWX). Where Google Fiber may represent what cable should be, there is a significant barrier that may prevent it from breaking through and becoming dominant.

In the video below, Fool.com contributor Doug Ehrman discusses two major reasons why Google Fiber should kill cable and one vital reason why this may never come to pass.

Fool contributor Doug Ehrman has no position in any stocks mentioned. The Motley Fool recommends and owns shares of Google. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.