They bought tons more cows, milk supply went up big time, demand did not. That means price went down. Obviously. The milk companies and stores didn’t cut their shares of course because the farmers were taking the lower prices.
So of course lets not try a little more capitalis, lets try politics.
Options would include canning it for export, dehydrating it for survivalists, exporting dried and canned form for cheap charitable donations. Canned cheese, dried yogurt ... long term products will have longer time in which they can be sold at a profit.