I work in the industry and own a wine and spirits sales and marketing company. Craft Beer is declining, but for specific reasons.
1) As more and more states go away from mom and pop liquor stores to grocery and chain markets we are getting less shelf space. The AB and Miller/Coors guys are coming in and going, hey if you want Bud Lite, you can only carry these micro brews that we either own, or are part of our distributor. Very limited shelf space for smaller brands/new brands/eclectic brands. Most chain buyers aren't in each location, but part of a big national buying program so all they care about is volume discounts and Nielsen data (sales numbers), and could care less about local products*. So AB is going, "buy this much Bud Lite i will give you Goose Island for this price", etc etc.
2) Bubbles were up 22% last year, Gin was up 12% and other Spirits were up 8-9%. This is because millennial females drink bubbles, specifically pink bubbles, and the growth of the cocktail market (this is huge). On-premise establishments make more money selling wine and spirits than they do beer, so they are pushing the $12 Old Fashioned or the Provance Rose. Beer as a whole was down over 7 percent, but most of that was tied into the domestic cheep beer brands. Which is why AB and Miller/Coors are throwing their weight around when it comes to their micros (they keep buying up more and more every day) or at least keeping the brands that work with their distributors, which AB is also starting to buy up, happy.
*-some chain stores have local or regional buyers which do have a local section or a couple doors dedicated to local brews, but at the same time, it comes down to who will pay the most, or eat the most margin to be in that space, thus becoming an opportunity cost for some of these small breweries/distillers. Can I afford to eat that much margin, just to be in those stores? Where is my breakeven amount? How much do I have to sell to make this work?
Tasting rooms are very important for these places. They can charge whatever they want, they don't have to deal with retail/distributor mark ups, they control the marketing and presentation and they can speak better to the product. As convenience of buying your booze/beer at Target and Grocery grows that just means less variety, and sadly, less small brands that can't pay to be featured or displayed properly. Plus, their is just a **** load of craft beer brands.