Supply Management is Okay, Actually
If there is one thing conservatives hate it is supply management. They hate that we pay more for eggs and milk because the government allocates quotas to farmers, and that those cartels can set minimum prices on their goods. That makes supply-managed goods more expensive than they might otherwise be, and that is a crime against God.
I am not a farmer, but here is one thing I know about supply management: unlike almost all other farmers, those farmers who have supply management quotas make good livings. Some of them are rich, actually. I suppose that I should be upset that farmers are rich, but given that we have a dearth of people who want to farm for a living, I think many many farmers could do with a raise.
Meanwhile, farmers who are not in supply-managed industries have to compete in the "free market". That is a tough way to make a living, especially since there are a lot of sellers (all the other farmers) and not that many buyers. Some farmers can sell directly to consumer, or sell to restaurants, but anybody who wants to sell to a grocery store has to deal with the grocery chain oligopoly (which is more properly called an oligopsony, because they are a small group of buyers). Thus many farmers are poor, and they encourage their kids to do something other than farming, which is part of the reason Canada is losing its farmers.
Maybe you don't care if there are no more farmers in Canada, but I do. Growing food is hard. Depending upon international producers (hello, California!) to provide all of our food when Canada has prime farmland seems idiotic to me. Growing our own food may be more expensive than importing everything, but it is not dramatically more expensive, and that extra expense is a good hedge against tariff wars and/or climate change.
I do not know the situation for dairy, but my understanding is that egg supply management have loopholes for small producers: those who raise fewer than 100 laying hens are not subject to quota. So we are not entirely beholden to rich farmers with quotas for our eggs.
Now let's consider the conservative utopia where there is no supply management. Now all farmers will be poor, because Canada is the land of oligopoly, and large players will assume the role of middlemen. They will offer low prices to farmers for their goods, and demand high prices from retail consumers. This is what happens for everything else in Canada. Why would eggs and dairy products be exempt? I am highly skeptical that prices for supply-managed foods would go down much in oligopoly-crazed Canada. Prices may well be lower, but I don't think they will be meaningfully lower. The grocery cartel has already been caught fixing bread prices; why do we think they are incapable of price-fixing for other goods?
Maybe supply management really is a crime against God. Certainly I want food prices to be affordable. But even with supply management Canada already enjoys low food prices as a percentage of per-capita income, when compared to many other countries. (I don't have a good citation for this assertion. Here are reports from a sketchy study conducted by some ecommerce program called Ubuy that everybody cites. Unfortunately, I can't find the actual study. Regardless, there are some indicative numbers about inflation reported here.) So I am skeptical that supply management should shoulder all the blame here.
Having said that, I am not sure I want to have supply management for vegetables and legumes. This is probably because vegetables and legumes are foods I purchase much more frequently than eggs or dairy (or meat), and I am a hypocrite. But having seen how vegetable farmers struggle to make a living maybe I should be advocating for income support here too.