Green discusses the strategy of Nick Sleep and Zakaria (Nomad), noting their portfolio concentration in Amazon, Costco, and Berkshire Hathaway based on "scale economies shared." Green connects this to Nima Shayegh's philosophy of holding a few high-quality businesses for the long term. These companies share efficiency gains with customers to widen their moats, a qualitative trait that ensures longevity. Hold these "immortal" business models that align customer benefits with shareholder value over decades. Leadership changes (post-Munger/Buffett) or antitrust regulation impacting scale.