So if you want to take over the market you need to turn the weed into a pharmaceutical,
you would need to create the public perception that the drug and various strains are deadly if not handled
by supervised and controlled government monitoring and taxation. You would probably through genetics
increase the potency and even mix in genetics that would create strains that poison the body. A few bad strains, with some dead teens would fuel the propaganda for the majority in the public to deem it necessary for governmental oversight and complete lock down of the market and continue the criminalizing of the black market. (You) be too stupid to grow your own, in fact (You) are possibly a terrorist that is possibly trying to kill children if you do so.
If you can't beat them join them and kick them out.
This ain't weed no more shaggy