Of course they don't like the Canadian fixed prices. They can still make money selling drugs to Canada. But the agreement they made included no reselling to America.
You have no problems with foreign countries reneging on contracts with US companies? As long as you benefit?
In every other industry, the leverage a company has in enforcing a sales agreement is loss of continued business. Why are drug companies not content with that?
So far as I'm concerned, it's the Canadians' choice whetehr or not the want to resell drugs across their border. It's also the drug manufacturers' free choice to keep selling to Canada. The dirty little secret going on here is that the markup on drugs is so high that they're still making plenty of money selling to the Canadian single payer. If they can convince a significant number of simpletons south of the border that bending over and getting sodomized by their price structure is the moral, "law-abiding" thing to do, then so much the better. Feel better now that you're spending your kids' college fund to support those double-page magazine ads full of tiny unreadable type extolling the merits of some preparation that everybody else in the world can already get over-the-counter?