Costco CEO Ron Vachris 2026 represents one of the most commercially instructive leadership stories in American retail — a story that begins in 1982 with a part-time forklift driving job at a Price Club warehouse in Glendale, Arizona, and ends four decades later at the helm of the world's third-largest retailer, generating $270-plus billion in annual revenue across 924 warehouses in 14 countries. When asked by Fortune magazine about the biggest threat to Costco's continued suc