The 20th-century view of shareholder primacy is flawed. By focusing first on creating wins for all stakeholders—customers, employees, suppliers, and society—companies build a sustainable, beloved enterprise that paradoxically delivers superior returns to shareholders in the long run.

Unlike PLCs obsessed with quarterly earnings, family-owned businesses often focus on long-term value by prioritizing customer satisfaction and employee well-being. This holistic, multi-time-horizon approach leads to superior, sustained market performance, as evidenced by their overrepresentation among advertising effectiveness award winners.

A founder is never truly without a boss. If not shareholders or a board, the customers ultimately dictate the company's direction and success. This mindset ensures a customer-centric approach regardless of ownership structure, keeping the business grounded and responsive to market needs.

Sears' decline was epitomized by a CEO who felt like a "stranger" in his own stores and pursued abstract corporate strategies. In contrast, Home Depot mandated that every executive spend time on the floor, ensuring that strategic decisions were grounded in the reality of the customer experience.

Great companies survive not because of a founder's continued presence, but because the founder codified a culture and operational DNA that outlives them. Companies like Home Depot and Amazon continue to thrive because their core principles are deeply embedded and replicable.

When Costco's management worried about threats from Walmart or Amazon, board member Charlie Munger provided the critical external belief in their model. He insisted they were the best and should attack competitors directly, which proved to be the winning strategy.

Public companies, beholden to quarterly earnings, often behave like "psychopaths," optimizing for short-term metrics at the expense of customer relationships. In contrast, founder-led or family-owned firms can invest in long-term customer value, leading to more sustainable success.

A sustainable competitive advantage is often rooted in a company's culture. When core values are directly aligned with what gives a company its market edge (e.g., Costco's employee focus driving superior retail service), the moat becomes incredibly difficult for competitors to replicate.

Charlie Munger prized 'win-win' systems, and Costco is the prime example. By offering clear value to all stakeholders—low prices for customers, reliable partnership for suppliers, high wages for employees, and steady returns for investors—Costco creates a self-reinforcing, durable competitive advantage that is difficult to replicate.