Even if AI dramatically lowers coding costs, it won't destroy established SaaS businesses. Technical expenses only account for 10-20% of revenue for major SaaS players. The other 80% is spent on marketing, events, and client service, creating an opportunity for significant margin expansion.

AI tools are commoditizing the act of writing code (software development). The durable skill and key differentiator is now software engineering: architecting systems, creating great user experiences, and applying taste. Building something people want to use is the new challenge.

Traditional SaaS development starts with a user problem. AI development inverts this by starting with what the technology makes possible. Teams must prototype to test reliability first, because execution is uncertain. The UI and user problem validation come later in the process.

The traditional SaaS method of asking customers what they want doesn't work for AI because customers can't imagine what's possible with the technology's "jagged" capabilities. Instead, teams must start with a deep, technology-first understanding of the models and then map that back to customer problems.

Implementing AI tools in a company that lacks a clear product strategy and deep customer knowledge doesn't speed up successful development; it only accelerates aimless activity. True acceleration comes from applying AI to a well-defined direction informed by user understanding.

Most AI coding tools automate the creative part developers enjoy. Factory AI's CEO argues the real value is automating the “organizational molasses”—documentation, testing, and reviews—that consumes most of an enterprise developer’s time and energy.

Data on 'vibe-coding' platforms shows that rebuilding a full SaaS app is an advanced, uncommon use case. Most users start with lower-risk, higher-ROI activities like rapid prototyping for engineering, building internal GTM tools, and automating personalized content creation.

For founders, AI tools are excellent for quickly building an MVP to validate an idea and acquire the first few customers—the hardest step. However, these tools are not yet equipped for the large-scale, big-picture thinking and edge-case handling required to scale a product from 100 to a million users. That stage still requires human expertise.

AI coding tools provide massive acceleration, turning projects that once took weeks or a dev shop into a weekend sprint. However, they are not a one-click solution. These tools still require significant, focused human expertise and effort to guide the process and deliver a final, functional product.