You could also make the argument that farmers should use some of their profits to buy insurance against such things. For example, I remember this story about the UK government and insurance provisions from earlier in the pandemic[1], and there were definitely experts on the radio at the time who said that it's possible to purchase cover against epidemics and other rare events - why not for government deciding to eliminate your herd? Or legal insurance so you can sue for compensation?

Additionally, if mink farmers are aware that their animals can be a vector for disease - and shouldn't they be? - then should they not also take steps to protect their own finances from foreseeable events, regardless of their likelihood?

[1] https://www.bbc.co.uk/news/business-51730412

Are they being closed permanently, actually? Yes, this would be a good opportunity to shut down that entire abhorrent industry, but I wouldn't be surprised if the government instead gives a fat handout to the fur farmers to restart their businesses.

Maybe not permanently, but it wouldn't make more sense if they were just allowed to start again next week.

But actually, since the coverage here isn't saying that the industry is being shut down, you're probably right.