In early February, Anheuser-Busch InBev, America's largest brewer, signed a deal to buy the Blue Point Brewing Company, a well-respected Long Island craft beer company. With Anheuser-Busch InBev's success, and its strong portfolio of beer brands that include Budweiser, Stella Artois, Beck's, and Corona, why would the company feel impelled to buy a craft beer company?