Contrary to the current VC trope that 'product is not a moat,' a truly differentiated product experience can be a powerful defense, especially in crowded markets. When competitors are effectively clones of an existing tool (like VS Code), a unique, hard-to-replicate product like Warp creates significant stickiness and defensibility.

AI can easily clone a product's user interface. However, a mature product's real defensibility lies in its "dark matter"—the vast, invisible knowledge of countless edge cases, regulatory nuances, and failure modes accumulated over years. This makes true replacement much harder than it appears.

As AI and better tools commoditize software creation, traditional technology moats are shrinking. The new defensible advantages are forms of liquidity: aggregated data, marketplace activity, or social interactions. These network effects are harder for competitors to replicate than code or features.

Brand is becoming a key moat in AI infrastructure, a sector where it was previously irrelevant. In rapidly growing and confusing markets, education can't keep pace with adoption. As a result, customers default to the brands they recognize, creating powerful monopolies for early leaders. This mirrors the early internet era when Netscape dominated through brand recognition.

Facing intense competition post-COVID, Zoom's strategy is to ensure its platform is open and integrates with competitors like Google and Microsoft. This acknowledges that enterprise customers don't want to be locked into a single vendor's suite, making openness a competitive advantage.

History, from VHS vs. Betamax to Microsoft Teams vs. Zoom, shows that a superior distribution network is a more powerful competitive advantage than a superior product. Being bundled with existing platforms or backed by major players can create an insurmountable moat.

True defensibility comes from creating high switching costs. When a product becomes a system of record or is deeply integrated into workflows, customers are effectively locked in. This makes the business resilient to competitors with marginally better features, as switching is too painful.

The LLM assistance space is trending towards "winner-take-most" not just due to quality, but because of user inertia. The vast majority of ChatGPT users are not multi-homing or even exploring alternatives like Gemini, indicating a strong default behavior has been established.

The most defensible businesses, especially in enterprise software, create such high switching costs that customers are essentially locked in. This "hostage" dynamic, where leaving is prohibitively difficult, is a stronger moat than simply having satisfied customers who could still churn. It's the foundation of an enduring software business.