This conversation is a discussion of this new paper.
Abstract
Coase explained the firm as the answer to transaction costs. Work stays inside when specifying, verifying and directing outsiders costs more than hiring employees. This note argues that AI erodes the assumptions behind that answer, rather than merely lowering the costs. Engineered systems known as harnesses largely complete contracts in real time, make external work more observable than employment, and carry context and control across the firm’s edge. As a result, the boundary that predicts where context sits, who controls the work, and where knowledge accumulates becomes the instrumented system, not the legal entity. Legal services, the profession organized most completely around Coasean frictions, is the worked example. Three tests decide the order in which work migrates. Three un-Coasean consequences follow. The boundary becomes something providers compete to move, knowledge pools with them, and incentives invert toward legal dispute prevention. Four conditions identify which other sectors restructure. The argument is predictive because the external-harness model is still early, and the pace is set by organizational inertia rather than the technology itself.
Three Erosions
1. Incomplete Contract Now Completes Itself
Contracts were incomplete when specifying every contingency was impossible, and the firm existed in part because a contract for "handle whatever arises" could not be written. Instead a general counsel was employed. Within an engineered AI system, what practitioners now call a harness covers context retrieval, encoded policies, deterministic rules, logging, and escalation gates. It thereby applies the client's encoded policies, sometimes in a probabilistic (so non-deterministic way) to cases nobody foresaw, escalates what is genuinely novel, and records every step and the rationale. In functional terms the harness acts as a contract that largely completes itself in real time. The classic reason to employ rather than contract weakens in proportion to what the harness can carry. Residual incompleteness remains for genuine novelty; the harness does not eliminate the need for human authority at the edge.
2. Observability Inverts
Williamson's hazard, and Alchian and Demsetz's account of the firm as a monitoring device, assumed that what is outside is opaque, and the employee can be monitored. The AI inversion is that a harness-delivered, external service is more observable than an employee: every retrieval, every check, every draft, every sign-off is logged and inspectable, while your own employee's reasoning cannot be audited at all. The make-or-buy hazard was moral hazard in the market from unsupervised external providers. In the AI era it is becoming relatively opaque internally. Buying becomes the more transparent option, given the
right interfaces.
3. Boundary
The boundary that matters stops being the firm. Coase's question was which transactions come inside the legal entity. With AI the question now is which decisions come inside the
instrumented, policy-governed, logged system, and that boundary cuts across entities. A
company's general counsel approving work inside an external provider's harness is inside the harness boundary while outside the firm boundary. Employment versus contract stops predicting where context sits, who controls the work, or where knowledge accumulates. The harness carries context and control across the boundary of the firm and thereby blurs it.
Four Conditions for Sector Restructuring
Whether a sector restructures, or just adopts AI into what it already has, rests on four
conditions. The work has a large procedural core that recurs at volume. Its outcomes can be
observed and learned from. Doing it across many clients makes the provider better at it.
Responsibility for it can rest on escalation and insurance, without the whole function being
under one insurance umbrella.
Discussion Topics
If we assume that the papers argument is correct:
- What sectors are most susceptible to restructuring?
- What information management systems will companies use in order to be legible to AI agents? They’ll want to have up to date, consistent, and searchable context for AIs to use and monitor.
- Does this change software development? Will more companies hire contractors?