And, finally, by dominating retail and digital business services, both of which touch almost every other industry, he's now positioned to move adjacently into just about any business where he finds added value. Second, the scale that Amazon needs for growth practically demands aggressiveness.

First, thanks to AWS, the company famous for emphasizing growth over profitability is finally spitting out billions-and Bezos has the market credibility to reinvest it in pretty much any way he wants. Though Bezos and Buffett were referring to retail and the cloud, Bezos is actually unconstrained in far more ways. 'Because he's taken two very major industries, and simultaneously, and sort of under the nose of competitors, he's become in effect the leader and is redefining them and succeeding at really big businesses.' 'What Jeff Bezos has done and is likely to do is perhaps the most remarkable achievement I've seen,' Warren Buffett told me last year, after I asked him, open-ended, to name the most impressive business mind in his almost eight decades of market-watching.

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