Just take a look at Canadian legal market. The grey market always outperforms it and many have begun shunning the expensive legal weed.
Lot's of weird actors in this space, especially these psychedellic therapy groups who are self-licensed and have history of misconduct.
I find these one off studies to be highly sensational and idealizing a very tough market to break into. The impact of marijuana is still not known 100%.
There is reason why some countries like Singapore have been extra careful to adopt these western libertarian ideas. While probably an overreaction, the impact of marijuana needs to be observed over a very long period of time and this is where pharmaceuticals shine.