CHICAGO – OCTOBER 09: Miller, and Coors a products are sold October 9, 2007 in Chicago, Illinois. Molson Coors and SABMiller said they will combine their North American operations to challenge the dominance of Anheuser-Busch which holds a nearly 50 percent market share. SABMiller the number 2 U.S. beer seller has about a 20 percent market share and Molson Coors is number 3 with just over 10 percent market share. (Photo Illustration by Scott Olson/Getty Images)