When it ended, the industry rapidly consolidated around the large-scale industrial breweries which have dominated the market ever since.
This is a big reason why the beer industry in America is weird. You have large mass-market brewers on the hand one, and small craft brewers making more creative beers on the other hand, but you don't have many medium-sized brewers making high-quality traditional beers.
It's pretty hard to compete with Europe in that segment.