Sam Walton

Sam Walton built the largest company in the world by revenue through a deceptively simple insight: sell everyday goods at the lowest possible prices, in small towns that other retailers ignored. Walmart's growth from a single five-and-dime store in Rogers, Arkansas, to a $600 billion behemoth with 2.1 million employees is the greatest retail story ever told.

Walton's competitive advantages were relentless cost discipline, a logistics network that became the most sophisticated in retail history, and a culture of frugality that bordered on obsession. He drove an old pickup truck, flew coach, and shared hotel rooms with colleagues. But his real genius was in supply chain management and data — Walmart was one of the first retailers to use satellite communications for inventory management, and its distribution network gave it a structural cost advantage that competitors could not replicate.

Critics argue that Walmart destroyed small-town retail and suppressed wages. Supporters counter that Walmart saved American consumers hundreds of billions of dollars and gave low-income families access to affordable goods. The truth is that Walton reshaped the American economy in ways that are still being debated. His autobiography, Made in America, is one of the best business books ever written — an honest, detailed account of building a company from nothing through obsessive attention to customers, costs, and competition.