Expansion costs money, but that's a really big stake for expansion. I know Elysian Brewing Company in WA sold out (I think to Coors, not sure) and Redhook Ale Brewery sold 30% of its share to Budweiser to get big nationwide distribution rights.
Most people don't know that the profit margin on beer is really small. It's hard to make it in the beer manufacturing without a huge volume of business on a wholesale bases. And, I think we will see more of the same in the future. My source of information is from Sage, a provider of data to accountants, banks etc.
DL