Analysts at Cowen Equity Research report that legal cannabis sales in the U.S. have begun to eat into the sales of beer, wine, and liquor although the alcohol industry is far from being crippled, according to a MarketWatch report. The researchers said they referenced about 20 years of government surveys and spending data, and an analysis of more than 8 million survey responses, including results from Nielsen and the Cowen Consumer Survey, to investigate the effects of cannabis on alcohol purchases.