ABSOLUTELY
Believe it or not, but people can make an amazingly rich living Growing/Selling Marijuana for the Government. My girlfriend's cousin owns a farm with 80 something Acres in Delhi Ontario which previously used to be a Tobacco Farm until the industry folded in the area, since then they've gotten tons of offers to grow Medicinal Marijuana on their land for the government of Canada but turned it down because of their personal beliefs (these particular people in the family abhore Marijuana completely). They could easily pull in at LEAST 100,000 plus a year steady income.
Alternatively if you know a medical patient, you can become their legalized grower, and depending on their prescription you can start off with 25 to 50 plants in your household. You grow it, and sell it to the person you're growing it for, and whatever you have left over you can sell to the Medical Marijuana shops throughout the city. The only drawback is that to do this you must have an absolutely insane security system that they check on at random periods without notice to ensure you're following their guidelines.
I grew for my friend that's a medical patient a couple times, but I can't do it anymore because I live in an apartment building. Different bylaws, etc. When I move into my own home (hopefully within the next 2 years) I am going to become a fully legalized grower and start to mass produce for my friend with the 25 plants he can have.