We've seen protests across Europe in the past by farmers who say they can't provide milk at such cheap prices and maintain welfare standards. Unfortunately, we consumers seem unwilling to pay for high welfare. Sure we say otherwise when asked, but our actions at the supermarket tell a different story.
Also, most consumers don't even know what conditions are like for dairy animals. In Europe, consumers smugly assume we have high welfare standards (maybe we do relative to other countries), but I was shocked to learned that some farms still tie and tether cows in small cramped indoor spaces [1]. In fact, most dairy cows will spend the majority of their life indoors rather than outside grazing on pasture. This is the price of cheap, industrial-scale agriculture.
[1] https://www.theguardian.com/environment/2018/dec/08/its-medi...