I can't speak for the whole of the US (heck, in many states you can't buy beer in the supermarket at all), but there's plenty of it where "normal supermarkets"

I can't speak for the whole of the US (heck, in many states you can't buy beer in the supermarket at all), but there's plenty of it where "normal supermarkets" do sell decent beer. Craft beer in the US was definitely set back quite a bit by Prohibition, which basically killed off all the small breweries for 40 or 50 years, but we've gotten over that by now.