Looming legalization spurs ‘massive interest’ in marijuana retail opportunities in Calgary ‘I think that they just want to establish themselves as names in that industry right now,’ says city official. Marijuana industry insiders say they have met with the operators of Canada’s largest stock exchange to devise a policy on investing in the U.S., where growing and selling cannabis violates federal laws. Matt Zabloski, business strategist with the city’s community standards department said getting a marijuana counselling license won’t necessarily put businesses in a better position once the drug is legalized.