Collaboration is a likelier scenario. In Colorado, where marijuana tourism has flourished, one company, Cultivating Spirits, offers dinners that pair food, wine and cannabis. The Wine & Weed Symposium in California will examine how legalization will affect the wine industry and how the cannabis industry has evolved in other states. It will also explore ways that the two industries can work together, especially in areas of regulation, tourism and hospitality. And of course, in the days before legalization, winemakers sometimes made marijuana-infused wines for private consumption.