Krispy Kreme Drops AI-Powered Donut Vending Machines After Supply Chain Meltdown. The iconic glazed donut giant pulled 1,200 "Krispy Kreme Robotics" kiosks in six major U.S. cities last night, citing an inability to keep dough fresh during peak demand spikes, causing a 4% stock dip in after-hours trading. CEO John Costello confirmed the pivot back to human-staffed shops, calling the rollout "our most painful Harvard Business Review case study yet."