We are stuck with alcohol. It's been part of every culture for thousands of years. In fact, there's evidence some ethnic groups have evolved the ability to handle it relatively well. However, it's still a multibillion-dollar health and social problem. Once other drugs are legalized and go "mainstream," I think we will see that problem multiplied.
I don't care how low the price of a Michael Moore books goes, I'm not interested. Just because something is made legal (or cheaper), that doesn't mean people will necessarily suddenly desire it.
It also ignores the arguments that legalization will lower prices and therefore drive the criminals out.
Prices should be high enough to provide revenue and low enough to discourage black marketeers. The state does this with booze now. There are not a whole lot of people making bathtub gin and not a whole lot of gangsters having gunbattles to see who controls the supplies to the speakeasies.
I have no objection to capitalism either, but if large "legal' corporations get involved, you will see advertising and other promotion, and more people will be persuaded to use the stuff. If you don't believe that, then you must think co's are stupid to spend billions on advertising, sponsoring auto racing, etc.
You assume there will be no regulation. I don't see that kind of thing playing out. Don't look for Coors Cannabis to be sponsoring the new scoreboard at your local high school.
SD