> And it couldn't be any other way, its economics. If one farmer starts feeding the animals with cheaper food and have better milk yielding cows, he would have a competitive advantage over other farmers, and start taking over a larger part of the market.

I don't think this is really true. people tend to associate "ethical" products with higher quality and are willing to pay more for them if they can afford it. this is the whole business model for stores like whole foods. of course whole foods sometimes misleads customers regarding how "ethical" the sourcing really is, but that's more a problem of marketing/advertising.