As the July deadline for the provinces to legalize marijuana approaches, the stock prices of Canadian publicly-traded weed producers have been on a tear. On Monday alone shares in Canopy Growth Corp., soared nearly 20 per cent. The surge in market value comes as firms try to position themselves with sufficient product to meet anticipated demand. But as these companies, some valued in the billions of dollars despite generating no profits, continue to attract starry-eyed investors, it’s worth examining what kind of opportunities will exist for these firms when provinces regulate retail pot sales. It is not difficult to predict profit margins will fall under regulation and that current market cap valuations are predicated on unrealistic expectations.