It worked for alchohol, and I don't see a lot of black market cigarettes either. It absolutely can and has worked. The excise tax listed in the article is LESS than the excise tax on alchohol in Virginia, yet again... no real black market for alchohol here. Your statement is made even more absurd by the fact that 1) this isn't a done deal yet, 2) they can adjust the tax later to help achieve the desired impact, and 3) you can grow your own legally now in CA.