The profit margin depends on the type of business. The average dispensary profit margin appears to be between 15% and 21%. There does not seem to be much information about other cannabis business types. Although one article states that the profit margin for infused products such as edibles or concentrates is about 32%.
References:
https://nstarfinance.com/cannabis-dispensary-profit-margin-insight/ https://mjbizdaily.com/chart-week-profit-margins-infused-products-can-sky-high/