The more research I did into the dairy cartel the more disgusted I became. Trump is 100% right is trying to break this cartel. Canadians are actually suffering from it, not gaining. I used to have this debate with leftists but they have too much TDS to reason with.
From a pure economic perspective, you do want to protect your domestic industries BUT you don't want to protect the industry so much that you actually stifle innovation and cause significant inefficiencies. To try to put it into layman terms, imagine you sold a product, let's say orange juice. When you first started hundreds of years ago you paid laborers to literally hand squeeze oranges. Then a mechanical squeezer was invented. In order to be competitive, you needed to buy these mechanical squeezers because the companies who owned them were able to layoff a lot of their employees and produce even more orange juice cheaper. Thus, you had to do the same to be competitive. The problem is that it takes a lot of upfront capital (money) to invest in the mechanical squeezers which you don't have. Thus, you go out of business and the businesses who could afford the mechanical squeezers stay in business. The net result though is that orange juice is more efficiently produced and the customers now have access to cheaper orange juice. Now imagine instead, the government said that it would tax everyone in society to pay you enough money such that you could continue to pay enough laborers to squeeze the orange juice by hand but the government would only pay you what you needed to be paid to stay competitive meaning if you bought the mechanical squeezers, the government wouldn't give you even more money. What do you do? Well, you don't buy the mechanical squeezers and continue to sell orange juice. All the people who bought mechanical squeezers can't compete with you because they need to repay the costs of the mechanical squeezer, which you don't have to, so you stay in business selling orange juice for the same price and now everyone pays higher taxes. So the efficiency of orange juice production didn't improve but the cost went up for the consumer all thanks to the government's protection.
That's essentially what's going on in the diary industry.
Now, there's some good reasons for wanting to protect certain aspects of our dairy industry. The USA uses rbST (a type of hormone to increase dairy production) whereas Canada does not but this can 100% be handled by simply banning the sale of milk where rbST is used. We don't need to give the Canadian producers money to compensate for their lack of use of rbST. If we don't want rbST in our milk then we ban milk in which cows had this used on them. We actually don't really need to do this either because with proper labeling, Canadians can choose. I for one would pay 15% more on my milk for milk made in Canada without rbST but some poorer people might not and they ought to have that option.