In California voters approved legalization. The country’s most populous state and biggest economy will allow people to buy marijuana for recreational use and, most importantly, let for-profit companies come into supply pot. There is a difference between local medical pot shops and the burgeoning marijuana industry that can rise from full legalization. A report from the investment bank Cowen estimated that legalization in California alone will triple the size of the current $6 billion legal pot industry within a decade. Another report from ArcView Market Research estimated that legalization in California would create a $6.5 billion market by 2020.