Strong empathy, humility, and risk tolerance are rare, less sustainable, and harder to replicate than know-how and raw brainpower. The author undermines his po

Strong empathy, humility, and risk tolerance are rare, less sustainable, and harder to replicate than know-how and raw brainpower. The author undermines his point by highlighting two companies, Amazon and Google, who at least in part have their competitive advantage solidified via an economic moat built from know-how. (Specifically Amazon's logistics, Google's AI chops, and both company's service operations expertise come to mind.)