For those that don't know some details about Canada dairy supply management [2]:
> The model, which matches domestic demand with domestic supply through a quota system, is particularly well-suited to a commodity like milk, where 40 percent is consumed locally. Supply management is designed to even out the peaks and valleys of producer income, and in this endeavour, it has been successful. It also allows farmers to plan for the longer term, which is particularly important when producing a commodity subject to the whims of the cow’s natural production.
Despite supply management going against free trade ideals most of the farmers I know do like it. It lets them keep the lights on and maintain family farms that have been running for generations, but on the other hand it costs consumers both in their pocketbooks and variety of choice.
[1] https://www.cbc.ca/news/politics/canada-supply-management-ex...
[2] https://www.cigionline.org/sites/default/files/cigi_paper_30...