Here's what you do if you're all upset and bothered by the ugly conditions on a mink farm.
Buy your own mink farm, hire your own furriers or learn the trade yourselves, and sell minks for less than the evil cruel mink dudes.
You can market it as Pre-Petted Mink. It'll cost you some fingers, but what the heck, no price is too big to save the earth, right?
They go out of business and you're in.
Otherwise, since you don't seem to own an interest in the business, you don't seem to have any reason to be bothered.