Many investors focus on the current size of a company's competitive advantage. A better indicator of future success is the direction of that moat—is it growing or shrinking? Focusing on the trajectory helps avoid value traps like Nokia in 2007, which had a wide but deteriorating moat.

The stickiest software is critical but inexpensive relative to a customer's overall budget, like payroll services. This 'Goldilocks zone' makes the software too small a cost for C-suite review, yet too embedded to easily replace, creating a powerful moat.

When asked if AI commoditizes software, Bravo argues that durable moats aren't just code, which can be replicated. They are the deep understanding of customer processes and the ability to service them. This involves re-engineering organizations, not just deploying a product.

A powerful, overlooked competitive moat exists in the "outsourced R&D" model. These companies, like Core Labs in energy or Christian Hansen in food, become so integral to clients' innovation that they command high margins and valuations that appear expensive when viewed only through the lens of their specific industry.

GE serves two distinct customers: powerful airframers for the initial sale and a fragmented base of hundreds of airlines for aftermarket services. This split forces new entrants to solve a '3D puzzle' of satisfying both technically demanding OEMs and a global user base simultaneously, creating an immense and durable barrier to entry.

The long-held belief that a complex codebase provides a durable competitive advantage is becoming obsolete due to AI. As software becomes easier to replicate, defensibility shifts away from the technology itself and back toward classic business moats like network effects, brand reputation, and deep industry integration.

Gardner’s "Cola Test" is a simple heuristic to identify unique market leaders. Ask yourself if a company is the "Coca-Cola" of its industry. Then, try to name its "Pepsi." If you can't find a clear, direct competitor, you've likely found a business with a powerful, defensible moat.

Doximity integrates multiple workflow tools like telehealth and e-signatures. While specialized competitors might offer better individual products, Doximity wins by providing a convenient, all-in-one platform that doctors are already engaged with daily, creating a powerful defensive moat.

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.