The two largest beer brewers in the world, Anheuser-Busch Inbev and SAB Miller, have agreed in principle to a merger.
Combined, the two companies account for about 70 percent of beer purchases in the United States.
Competitors are looking warily at the move.
With growing demand, craft beer companies have become a force to be reckoned with.
But some are afraid the merger of the beer giants could shut out the little guy.
