Exactly!
But they would rather put the millions of people that need some kind of Anti-Depressant Medication, PRozac, Zoloft, and all the other ones that have grave side effects instead of letting many of these people smoke Pot which would mellow them out and calm them down.
No company will pay the half million dollar price tag for FDA approval for a plant you can grow in your garden. No profit on a plant you can't patent.