Comcast on Thursday agreed to buy Time Warner Cable. The merger with Time Warner would create the largest cable company in America.  If the deal is approved by regulators, one company would service much of the American market. A survey of 70,000 American consumers ranked Time Warner Cable as the second worst company in America for overall customer satisfaction. Comcast was not far behind in fourth place. It’s clear that customers want more choices and increased competition in the cable television and Internet industry.