Case study : managerial economic

Snack food venders and beer distributors earn some monopoly profits in their local markets but see them slowly erode from various new substitutes. 

1.Search for information on the California vote on legalizing marijuana.
2. Which side of the vote did the two industries take and why? Please discuss at least one more group/industry in the state that took the same side as each of the parties above and provide a discussion of the potential reasons. Please provide references. 

3. Your discussion should be based on what you have learned in this (Managerial Economic)course as well as what you know about the products in question.