I'm not sure Conservatives are so against it as they were involved in the earlier versions of the licensing and the loopholes have occured under their watch.  https://www.canada.ca/en/health-canada/services/publications/drugs-health-products/understanding-new-access-to-cannabis-for-medical-purposes-regulations.html    As we see from the US, the lure of tax revenue is too great a drug to stop the legalization momentum.