Established SaaS firms avoid AI-native products because they operate at lower gross margins (e.g., 40%) compared to traditional software (80%+). This parallels brick-and-mortar retail's fatal hesitation with e-commerce, creating an opportunity for AI-native startups to capture the market by embracing different unit economics.

As SaaS firms use AI to optimize operations, they feed models data on how their products are built. This creates a deflationary spiral where customers can use the same AI to build cheaper alternatives, threatening the core SaaS business model by accelerating price and profitability compression.

Creating frontier AI models is incredibly expensive, yet their value depreciates rapidly as they are quickly copied or replicated by lower-cost open-source alternatives. This forces model providers to evolve into more defensible application companies to survive.

Pure software-as-a-service (SaaS) companies are vulnerable to being replaced by foundational AI models that can replicate their functionality. A Sequoia partner suggests the defensible model is to become a services company that uses technology as a layer, focusing on implementation, strategy, and human expertise.

Unlike traditional SaaS, achieving product-market fit in AI is not enough for survival. The high and variable costs of model inference mean that as usage grows, companies can scale directly into unprofitability. This makes developing cost-efficient infrastructure a critical moat and survival strategy, not just an optimization.

Gurley notes that major AI model providers like OpenAI and Anthropic are shifting from solely selling API access to building their own applications. This move up the stack signals a fear that being a pure model provider is not a defensible moat and could lead to commoditization.

AI is making core software functionality nearly free, creating an existential crisis for traditional SaaS companies. The old model of 90%+ gross margins is disappearing. The future will be dominated by a few large AI players with lower margins, alongside a strategic shift towards monetizing high-value services.

Application-layer AI companies can pivot rapidly with model improvements because they serve sticky end-customers. Infrastructure companies face a pickier developer audience that is more likely to churn completely to the next hot tool, making pivots riskier.

SaaS businesses thrived by organizing newly abundant information. AI now makes the creation and organization of software itself abundant, driving its cost to zero. This commoditization of the core value proposition of many SaaS companies makes them a poor venture investment category going forward.