The U.S. wine market is now the largest in the world, but retailers are still struggling to compete on ecommerce channels, reported Beverage Daily, citing Rabobank’s Wine Quarterly Q3 report and an earlier report on alcohol ecommerce. “Changes in technology, business models and market structure are disrupting the market and creating new sets of winners and losers among wholesalers, retailers and suppliers,” Senior Beverage Analyst Stephen Rannkeleiv wrote in the Wine Quarterly. “Responding quickly to these changes will determine who survives, who thrives and who fades away.”