Pat Dorsey: Economic Moats and More

In this episode of The Long View, host Ben Johnson and portfolio strategist Amy Arnott welcome Pat Dorsey, founder of Dorsey Asset Management and former director of equity research at Morningstar, to discuss the concept of economic moats and their application in investing. Dorsey, widely recognized as the 'moat guy' for pioneering Morningstar's moat rating framework, explains that a moat is a sustainable competitive advantage—such as brand strength, switching costs, or network effects—that enables a company to maintain pricing power and long-term profitability. He emphasizes that moats are not static; some are inevitable (like Coca-Cola), while others are dynamic and require constant reevaluation in fast-changing industries like software and semiconductors. Dorsey warns against mistaking a great product for a durable moat and highlights how quantitative metrics like return on capital are increasingly flawed for capital-light businesses like Facebook or Google, where qualitative analysis is more valuable. He shares real-world examples, such as PayPal’s erosion of moat due to inability to integrate with NFC technology, and Visa’s surprising resilience to regulatory pressure. The conversation also explores management quality, the dangers of founder cults, pricing power, and the importance of humility and reinvestment in maintaining moats. Dorsey’s investment process avoids broad universes by focusing on high-moat, high-growth sectors like enterprise software and aerospace, while using tools like 'premortems' to stress-test investment theses. He concludes by discussing the edge of long-term investors in efficient markets, arguing that behavioral advantages—such as patience and immunity to short-term noise—can outperform information-based edges in widely followed stocks like Meta and ASML. Finally, he reflects on the role of opportunity cost in portfolio decisions and the benefits of a private, low-turnover investment structure that allows for thoughtful, frictionless capital allocation. Key takeaways include: (1) A moat is a sustainable competitive advantage, not just a great product; (2) Qualitative analysis is more critical than quantitative metrics for capital-light businesses; (3) Network effects are not inherently durable and must be scrutinized; (4) Founder-led companies require the same management scrutiny as non-founders; (5) Pricing power must be balanced with reinvestment to avoid 'milking' a business; (6) Use premortems to identify and monitor thesis risks; (7) Long-term investors have a behavioral edge in efficient markets; (8) Opportunity cost should be a core part of portfolio evaluation. The overall tone is insightful, pragmatic, and deeply analytical, with a strong emphasis on intellectual honesty and long-term thinking.