"Though Comcast doesn't disclose it specifically, analysts have estimated that Comcast's profit margins on broadband service are 80 percent or higher. In 2008, Sanford C. Bernstein & Co. analyst Craig Moffett estimated Comcast's data margins at 80 percent, and Credit Suisse reported in fall 2010 that Comcast's gross margins on high-speed data were 93 percent."

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