The Globe and Mail reports in its Saturday edition that bans and added restrictions on cannabis extracts proposed last week by Quebec will cost Canada's legal pot sector hundreds of millions of dollars in annual sales, experts warn. The Globe's Jameson Berkow writes that experts say it might also cost the country a key advantage in the growing global cannabis industry. Quebec launched a 45-day public consultation Wednesday on a policy that would prohibit sales of cannabis-infused confectionaries such as brownies, gummies, chocolates or mints. Under the proposed plan, the province would also cut the maximum amount of THC allowed in other infused foods and drinks to five milligrams -- half the limit set by Health Canada last month -- and prohibit THC levels above 30 per cent for non-edible cannabis products such as vape cartridges. Because vape cartridges typically contain THC concentrations ranging from 70 per cent to 90 per cent, industry executives say the policy amounts to an effective ban on cannabis vape products as well. Mr. Berkow says vaping is among the most popular forms of non-smokeable cannabis consumption. Deloitte's Rishi Malkani says, "Confectionary alone is about $150-million in just Quebec."