Buying stock in weed?

Taxed to heck. Prices are outrageously high. Some contracts have been cancelled for one reason or another(QC control I believe) The retailers from what I have seen are operational and the "fails" are the growers/contractors.
The Reserves(and black market) have lots of selection and lower prices.
You can buy plants/seeds etc and grow your own legally. Not sure how this would work out for the Gov in the long run?
This is in Canada