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.

A partner at Google's AI-focused fund, Gradient Ventures, has adopted a "short SaaS" investment thesis. The rationale is that AI makes building software so easy that most traditional SaaS companies no longer have a defensible moat. This puts the entire business model in jeopardy, making it an unattractive area for new venture investment.

As large AI models absorb functions of traditional SaaS products, investors and entrepreneurs are shifting focus back to tech-enabled services. Integrating AI deeply into physical services and workflows is now seen as creating more defensible, lasting value than pure software, reversing a years-long trend.

As AI commoditizes software, hardware is re-emerging as a key defensibility layer for startups. A decade ago, VCs avoided hardware, but now a physical device tied to a software subscription creates powerful stickiness and justifies high valuations, representing a major shift in investment strategy.

For over a decade, SaaS products remained relatively unchanged, allowing PE firms to acquire them and profit from high NRR. AI destroys this model. The rate of product change is now unprecedented, meaning products can't be static, introducing a technology risk that PE models are not built for.

A new, ethically questionable go-to-market strategy is emerging: startups are getting VC funding to simply clone an established software product using AI coding tools and then offer it at a fraction of the price, bypassing traditional R&D and innovation.

AI drastically accelerates the ability of incumbents and competitors to clone new products, making early traction and features less defensible. For seed investors, this means the traditional "first-mover advantage" is fragile, shifting the investment thesis heavily towards the quality and adaptability of the founding team.

AI is not killing B2B SaaS, but it is fundamentally changing the competitive landscape by making software easier to build. This commoditizes core features, forcing existing SaaS companies to develop unique, defensible moats beyond just code to protect themselves against a new wave of competitors who can quickly "vibe code" similar solutions.

AI makes it easy to replicate successful software, diminishing moats. This threat of being "vibe coded" pushes early-stage investors like Hustle Fund to seek defensibility by backing more complex, harder-to-copy infrastructure and hardware companies instead of just applications.