That growth has been helped by the legalization of cannabis in Canada and a lengthening list of states. For those who are looking to profit from pot, either through investing or other means, the time is. Here are four ways to make money from legal marijuana. The marijuana business is no longer an underground network. Instead, you now find marijuana-related companies listed on major stock exchanges in the U. S and Canada. Several larger marijuana companies in the U. Not sure how to get into investing? An browing investment service like Wealthsimple makes it easy. The weed industry is looking past the hysteria and speculation over bitcoin and other digital currencies and is seeing important uses for the underlying blockchain technology.