“People were ripping apart every component of my investment thesis. At that point, they thought Amazon was some kind of nonprofit scam.” Inside Amazon, the pain endured over the previous seven years was paying off. Prime, the two-day shipping service, was an engine spinning the company’s flywheel ever faster. Amazon customers who joined Prime doubled, on average, their spending on the site, according to a person familiar with the company’s internal finances at the time. A Prime member was like a shopper who walked into a Costco warehouse for a case of beer and walked out with the beer plus an
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