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Monopsony power

Gauge a buyer's ability to set the price it pays below the competitive level by the slope of the upward-sloping residual supply curve it faces (finite elasticity ε), which yields a markdown of roughly 1/ε and the double distortion of underpayment plus under-hiring.

Core Idea

Monopsony power is the buyer-side analog of monopoly: a buyer's ability to set the price it pays below the competitive level without losing all its suppliers. Its structural signature is an upward-sloping residual supply curve — to attract one more seller, the buyer must raise the price paid to every seller already in the pool. So the marginal cost of an additional unit exceeds the price paid, and profit-maximization equates marginal revenue product to that higher cost, leaving compensation below marginal product. It is a spectrum, generated by any friction making supply elasticity finite.

Scope of Application

Monopsony power lives across the subfields of economics where a buyer faces an upward-sloping residual supply curve — a finite supply elasticity to that particular buyer.

  • Labor economics — the home turf: search frictions, commuting, licensing, non-competes, tied visas, concentration.
  • Antitrust enforcement — no-poach and wage-fixing as buyer-side offenses; labor-effects merger review.
  • Healthcare procurement — a rural hospital facing local nurses, or an insurer facing physicians.
  • Agricultural procurement — a regional meatpacker facing cattle producers.
  • Sports and entertainment, and unfree labor — reserve clauses and tied-visa programs as engineered monopsony.

Looser "platform/data monopsony" extensions belong to the parent bargaining_power, not the elasticity-and-markdown apparatus.

Clarity

Naming monopsony power converts "why are wages low?" from a moral accusation into a measurement question: the firm faces residual supply elasticity ε, implying a markdown of roughly 1/ε. It localizes the cause of low pay to one observable — the slope of the supply curve the employer faces — separating a market that merely pays little (low marginal product, competitive) from one that pays below marginal product (positive markdown). It also dissolves the reflex that a wage floor must cost jobs, and sharpens each policy debate into a question about a specific friction and its elasticity-shift.

Manages Complexity

Low wages, minimum-wage puzzles, no-poach suits, merger effects, non-competes, licensing, tied visas — each arrives as its own debate. Monopsony power compresses the sprawl to one property, the firm-level supply elasticity ε, off which the markdown (≈ 1/ε) and every wage shortfall follow mechanically. The policy debates collapse to one structural question — which friction is steepening this buyer's curve, and how much does flattening it lower ε? — and the elasticity region itself is the branch that predicts whether a wage floor destroys or creates jobs.

Abstract Reasoning

The concept locates low pay in the supply-curve slope and reads diagnosis, welfare, and policy off ε. Its foundational move converts an accusation into a measurement. A decisive diagnostic separates "pays little" from "pays below marginal product." An interventionist friction-targeting move treats ε as the sum of named frictions. The most counterintuitive move is regime-conditional prediction of a minimum wage's effect. Underwriting all is the marginal-cost-exceeds-price move yielding the double distortion, plus a mirror-and-transfer to any monopsonistic procurement setting.

Knowledge Transfer

Within economics monopsony power transfers as mechanism wherever a buyer faces an upward-sloping residual supply curve: the diagnostic (estimate ε), the welfare reading (markdown ≈ 1/ε, the double distortion), the friction-flattening intervention, and the regime-conditional minimum-wage prediction carry intact across labor economics, healthcare and agricultural procurement, sports labor, and antitrust, because each is a genuine instance of the same buyer-side structure. Beyond that range the named apparatus does not travel — "platform" or "data monopsony" borrow the shape but lack the supply-elasticity machinery (analogy). What genuinely recurs is the parent, imperfect competition / asymmetric bargaining_power (the buyer-side mirror of market_power); monopsony is its supply-curve-equipped specialization.

Relationships to Other Abstractions

Local relationship map for Monopsony powerParents appear above the current abstraction, mutual partners to the right, and children below. Node labels state whether each abstraction is prime or domain-specific; colors identify relation types.Monopsony powerDOMAINDomain-specific abstraction: Market power — is a kind ofMarket powerDOMAIN

Current abstraction Monopsony power Domain-specific

Parents (1) — more general patterns this builds on

  • Monopsony power is a kind of Market power Domain-specific

    Monopsony power is market power specialized to a buyer facing an upward-sloping residual supply curve and extracting a markdown.

Hierarchy paths (2) — routes to 1 parentless root

Neighborhood in Abstraction Space

Monopsony power sits in a crowded region of the domain-specific corpus (2nd percentile for distinctiveness): several abstractions share nearly its structure, so a description that fits it tends to fit its neighbors too.

Family — Market Structure & Price Equilibrium (25 abstractions)

Nearest neighbors

Computed from structural-signature embeddings · 2026-07-12