[3vidence]

The supply and purchase of Dairy in Canada is centralized through the government.

Government sets a supply goal and buys that amount from farmers and then resells to the grocers / public.

It's been this way for a long time. The tarrifs are there to control for a case of oversupply in the market, but I also seem to remember that those supply targets haven't actually been met in a single year so the tarrifs effectively don't apply.