Forrester: "Software May Increasingly Write Itself. Enterprise Trust Will Not."

“Software may increasingly write itself. Enterprise trust will not.” That’s Forrester Principal Analyst Clinton Herget’s framing for why software development service providers can no longer compete on engineering capacity now that AI-assisted coding has commoditized raw code generation. His prescription, published August 3, lays out four shifts: master AI-first development practices like prompt engineering and spec-driven workflows; differentiate through the human judgment calls — product design, systems architecture — that AI still can’t make; sell long-term resilience (maintainability, quality control, security, technical-debt mitigation) instead of speed-to-delivery; and adopt a shared-responsibility model where the client supplies context and the provider delivers what Herget calls “assurance as a service.”

The TAM math underneath this reframe is what makes it urgent rather than theoretical. On a recent 20VC x SaaStr recap, investor Rory O’Driscoll flagged a ceiling most vendors haven’t priced in: with roughly 1.8 million US developers and about $250 billion in total developer wages, if the bulk of Anthropic’s and OpenAI’s enterprise revenue is coding-related, they may already command close to 20% of the entire software labor market — a ceiling that could arrive faster than any company has hit one before. Coding spend is accelerating fast enough to make that plausible: the same recap cited ClickHouse’s AI spend up 60x since February.

Herget’s “assurance as a service” pitch is really a governance-and-economics pitch in disguise, and BCG’s return-on-AI framework gives it a metric to run on. BCG argues the right measure isn’t raw token spend but cost per successful outcome, tracked through a discipline of seeing (owner-then-outcome attribution), shaping (routing by complexity, reusing context), and proving or stopping the highest-cost workflows.

For sellers positioning anything AI-adjacent, the lesson generalizes past coding: once a capability commoditizes, the sale moves from “we can build it” to “we can be trusted to be accountable for it” — and that’s a harder, more durable pitch to make.