Search was just the appetizer.
Right now, the market is pricing in something existential. We aren't just looking at another cycle of multiple compression; we are witnessing the Great Re-Rating. AI agents are no longer just "chatting"—they are executing. And as they do, they are turning a $600B horizontal software market into dead weight.
The thesis is simple: If an AI can understand the work, access the tools, and execute the workflow, then "thin" SaaS—products that are essentially just a UI on top of basic logic—is no longer infrastructure.
It’s just overpriced middleware.
The 3 Phases of the Agentic Takeover
The disruption isn't hitting everything at once. It’s moving in waves, moving from the public square into the private enterprise.
Phase 1: AI Eats the Open Internet
The Shift: Users move from "browsing 10 blue links" to conversational synthesis.
The Victim: Google’s ad-driven model and the "click economy."
Result: The open web begins to hollow out as organic distribution collapses.
Phase 2: AI Eats Horizontal SaaS Point Solutions
The Shift: Agents gain API access and context. They don't need a UI to "click" a button; they just execute the function.
The Victim: E-signatures, email automation, and scheduling tools.
Result: Products with 90% commodity features get re-rated to zero. Why pay $50/seat for a tool an agent replicates for pennies?
Phase 3: The Great Re-Rating
The Shift: The market realizes that "software" is no longer the moat—data and domain are.
The Victim: Any company caught in the "middle" of the stack.
Result: Venture capital bifurcates into AI-native infrastructure and Deep Vertical Software.
The Disruption Matrix: Who Survives?
Not all software is created equal. The vulnerability of a product is inversely proportional to its "depth."
| Category | Risk Level | The "Agentic" Outcome |
| Point Solutions (Scheduling, e-sigs) | ? Critical | Replicated via simple API calls. |
| Horizontal SaaS (CRM, Project Mgmt) | ? High | Becomes a background database; UI becomes irrelevant. |
| Vertical SaaS (EMRs, Construction Tech) | ? Low | Protected by regulatory moats and complex workflows. |
| Systems of Record | ? Low | The ultimate survivor; the "source of truth" for the agent. |
The "Sandwich" Effect: OpenAI’s Declaration of War
OpenAI’s recent moves (and those of Anthropic/Google) clarify the roadmap. They are building the Frontier Layer—the intelligence and the execution.
If your product is a "thin" workflow layer sitting between the user and their data, you are being sandwiched. The LLM provides the brain, the Agent provides the hands, and the System of Record (SoR) provides the memory.
The Hard Truth: If an AI agent can perform your product’s primary function via a single API call, you don't have a company. You have a feature that hasn't been integrated yet.
Counter-Point: Is the System of Record Safe?
There is a growing school of thought that even the "Gods of SaaS" (CRMs, ERPs) are vulnerable. The argument is that an agent can simply "clone" the experience: inferring intent, generating forms, and validating inputs on the fly.
My Verdict: I disagree.
While agents can replicate the experience of a CRM, they cannot easily replicate the institutional gravity of a System of Record. A healthcare EMR isn't just a UI; it’s a compliance fortress, a billing engine, and a decade of proprietary data.
The future isn't AI replacing the SoR—it’s the SoR + Agents.
Final Thoughts: The Survival Minimum
If you are a founder or investor, you must ask one question: Does this software own the data, or just the mouse clicks?
The Winners: Foundation models and Vertical Systems of Record.
The Losers: "Thin" horizontal layers that charge for "seat-based" access to commodity logic.
The "UI-first" era of software is ending. The "Agent-first" era is here. If you aren't the source of truth, you're just standing in the way of the workflow.
Would you like me to generate some "hooky" social media captions (X/LinkedIn) to help promote this post once you publish it?
