Previously, startups had years before incumbents copied their innovations. With AI coding assistants, incumbents can now replicate features in weeks, not years. This intensifies the battle, making a startup's ability to rapidly acquire distribution its most vital competitive advantage for survival.

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.

AI makes the technical 'doing' of business, like coding, accessible to everyone. The durable competitive edge is no longer the ability to build a product, but the ability to reach and acquire customers. Audience and distribution channels are the new defensible assets.

AI favors incumbents more than startups. While everyone builds on similar models, true network effects come from proprietary data and consumer distribution, both of which incumbents own. Startups are left with narrow problems, but high-quality incumbents are moving fast enough to capture these opportunities.

The stark contrast between niche paid apps and the trillion-dollar companies dominating the top free app charts highlights a critical insight for the AI race. An existing user base of billions, which companies like Google and Meta possess, is a more powerful competitive advantage than having a marginally better model.

For product categories where AI can easily replicate the core technology (like online file converters or headshot generators), defensibility shifts away from tech. The business becomes a pure play on marketing, distribution, and brand, much like succeeding with a new brand of canned water.

Even as AI makes building software easier, pricing power is retained by companies with strong brands and distribution channels. Established players like Salesforce haven't lowered prices despite immense competition, proving that market presence and trust are more durable moats than easily replicated technology.

As AI tooling advances, building complex applications becomes trivial, commoditizing software development. Defensibility can no longer come from technical execution. Companies must find moats in business models, distribution, or data, as simply 'building what customers want' is no longer a competitive advantage.

Advanced AI tools have made writing software trivially easy, erasing the traditional moat of technical execution. The new differentiators for businesses are non-technical assets like brand trust, distribution networks, and community, as the software itself has become instantly replicable.