InBev, the Walmart of beers. With a $104.2 billion merger agreed to in principle, beer giants Anheuser-Busch InBev and SABMiller will make 70% of the beer sold in the U.S. But, while that's awesome for the companies, maybe not so much for people, and smaller beer makers. Antitrust experts fear that none of the possible market outcomes of the AB InBev (ABI)/SABMiller merger are good for you.