Roberts has transformed a formerly staid local cable provider into a global media powerhouse. Comcast is currently digesting last year's acquisition of NBC Universal and has signed a
major deal for U.S. TV rights to the next four Olympic Games. Comcast's ambition is to control the delivery of digital media, increasingly using cloud-based technology. Risks: Roberts
faces intense competition across the rapidly changing media industry, from other cable companies to telcos, satellite companies, Netflix and more.