Marc Lore turned a guaranteed money-loser—selling diapers online—into a $300M revenue giant, got crushed by Amazon's predatory pricing, then built Jet.com to compete against them directly. Walmart bought it for $3.3B in 2016, the largest e-commerce acquisition in US history at the time. A story of resilience, competitive drive, and learning to build culture that survives corporate acquisition. Marc bought diapers at wholesale clubs at full price, sold them online at lower prices losing money on every transaction, betting customers would buy higher-margin baby products in the same shipment to offset shipping costs. Amazon dropped diaper prices 30% in 2010 to crush Diapers.com's growth, then explicitly threatened worse retaliation if Marc rejected a competing $650M offer, forcing the sale at $550M instead.