One of America’s most powerful food lobbying groups has been neutered, largely abandoned by its own industry after failing to adequately contain or respond to changing consumer tastes that food makers have found threatening.

A succession of high-profile, global companies have terminated their memberships with the Grocery Manufacturers Association (GMA)—the self-professed “voice of the industry”—rapidly undoing some 110 years of work the trade association had done to amass influence in US politics. In July 2017, as first reported by Politico, the Campbell Soup Company decided to leave GMA by the start of 2018, saying the trade association no longer represented its views. Three months later, the world’s largest food company, Nestlé, announced it was following suit. Then the floodgates opened, with Dean Foods, Mars, Tyson Foods, Unilever, the Hershey Company, Cargill, the Kraft Heinz Company, and DowDuPont all opting to leave, as well.