You should look into how distribution works. It’s very likely that companies doing distribution, which are shockingly also mostly the major beer companies, simply decided to offer less of it or raise prices for it to push retailers and bars toward things they fully own, which is a sizable chunk of the craft beer market available in stores other than the brewery itself.

It’s all really shady nonsense collusion shit, but not really the fault of breweries. Most of them don’t benefit either.