Oh they definitely have. Anheuser-Busch brands - Wikipedia = Anheuser-Busch's list of acquired craft beer labels. Also note that AB makes Shocktop, Goose Island & Landshark. MillerCoors - Wikipedia = MillerCoors makes Leinenkugel, Blue Moon and a few other smaller ones as well. The 3rd largest beer conglomerate, Constellation Brands, recently paid (late 2015) $1bn for Ballast Point which I believe was preparing to have it's IPO around that same time. Ballast Point is a very legit San Diego craft beer maker - pretty cool to see them get so much money in the sale. Their beer has still been really good since 2016 onward.