In regards to milk, because of the process for regular product (repetitive pregnancy) it's been, at least here in America, cornered into the industrial market. Also, raw milk hatred (which arguably only exists due to industrialization) has further forced the industrialization of milk. This situation you refer to is extremely rare. The small farms I've seen in my life don't keep dairy cows when they do keep cows. My opinion on family cows is that it's totally fine. Then again, I believe in seizing the means of production (which is what family cows strike me as) and I'm an omnivore.