Well when I worked for Pyramid (120 Barrel system) we were owned by a large conglomerate that also owned Labatt's US, Genesee, Magic Hat, and a few other breweries. We were a small craft division of the overall large company and only brewed the Pyramid and Portland Brewing Co beers (I actually wrote the recipe for the spring seasonal for Portland Brewing). Before that I brewed Hale's Ales (30 Barrel system) in Seattle where it was still owned by Mike Hale and is the longest independently owned brewery in the northwest and now I'm the head brewer at Walking Man Brewing (20 Barrel system) in Stevenson and it's independently owned as well by this amazing older guy Bob. And there are also contract breweries where they brew beer for smaller breweries on a larger scale or even brew for "breweries" that don't have a brewery of thier own (Sam Adams started out that way). And, there are a few "gypsy brewers" out there that go around and kind of rent out breweries and brew crazy beers all around the world (Mikeller is a good example). So that being all said, the industry is super diverse and there are a ton of different ways to run a brewing company, none of them really wrong.