Yeah I skirted around the actual reasons that the plant was originally outlawed, using my 'everybody knows' theme to get to the current and future possibilities. Recently I read that the term 'marijuana' was actually the name of a completely different plant before the industries saw the need to eliminate both industrial hemp and the psychotropic cannabis from the competition. "Marijuana" is apparently some kind of other harmless Mexican plant that had a wicked sounding name, while the nice sounding 'cannabis' that used to appear on cough syrups and medicines of all kinds had to go!
The usual story about industrial hemp's initial demonization was that some giant newspaper or magazine publisher had just purchased a lot of timberland for paper production, and (I forget his name) decided to start publishing the stories about the horrors of 'marijuana', so that the public would demand a solution through some decisive governmental action.
William Randolph Hearst, was the 'yellow journalist' in question, and he wasn't alone, but in cahoots with Standard Oil, and they destroyed the electric car industry, Hemp, and American freedom for vast profits.
Harry J. Anslinger rots in a special hell today.