This article rests on a couple of unspoken assumptions: that large scale farming is better. Large scale farming is more efficient, but is it better for the environment and, given that it often depends on the use of hormone growth therapies and anti-biotics it is questionable that it is better for consumers.
The second assumption is that if dairy free trade is put in place, Canadians will benefit from significantly better prices. At least as likely, in my opinion, is that Canadian jobs and dairy production will go south of the border and, as Target demonstrated, American companies could care less about offering the best prices. They charge what they believe Canadians will accept.