Very interesting.
Good to know that American beer taste is evolving. Used to annoy me being considered a "beer snob" when the real old styles of beer are the true standards. After all, you're not a burger snob if you'd rather have 1 thicker burger from the grill than 3 "beef" patties from McDonalds, right?
Perhaps the big macro companies will simply also evolve and make real beers once again. Many companies make pre-prohibition style American lagers, which aren't too far from what most breweries sold back in the day, given the strong German heritage.
For those relatively new to beer, WWII brought about grain rationing, which is why the breweries that survived prohibition were using rice and other adjunct ingredients. Given that many hadn't had a beer in so long, they forgot how beer was supposed to taste. Light beers became popular and were a gold mine because they honestly contain next to nothing in terms of ingredients, which is why they became so profitable.