I guess I am not surprised and not too worried. As a homebrewer, I get my reward when I taste my product or somebody takes a pull off a pint of something I've made and has that look of "You made this?!" on their face. The job of corporation leadership is to make a corporation as successful as possible within the confines of law and morals. It's their job to chase the dollars being spent by people in the market. Buying up successful breweries to capture market share (people who desire craft beer) on behalf of their shareholders is simply good business. I look at it as their version of "innovating". The strategy either by design or coincidence is influencing the supply of raw materials in the market and even worse, negatively impacting the ability of the small guy to get tap space.
From a raw material standpoint, that market is reacting in Michigan. Hop farms are popping up all over the place. Farmers plant to make money. I imagine the same thing is happening other places too. There may be a lag, but eventually supply will catch up. The same thing will happen with taps. There have been posts on here about the zillion taprooms with substandard beers that come and go. Those guys don't last. What does last is quality so make good enough beer and you'll be successful. Even big money can't make someone drink "America".