---
id: "prereq-game-theory-signaling"
type: "prereq"
source_timestamps: ["§ The Commitment Paradox"]
tags: ["economics", "game-theory"]
related: ["concept-commitment-paradox"]
sources: ["tail1"]
sourceVaultSlug: "hbr-seg-tail1"
originDay: 1
articleStem: "hbr-tail-116-winner-take-all-diversification"
sourceUrl: "https://hbr.org/2026/04/in-winner-take-all-markets-diversification-is-a-liability"
sourceTitle: "In Winner-Take-All Markets, Diversification Is a Liability"
---
# Game Theory and Strategic Signaling

## Prerequisite: Game Theory and Strategic Signaling

**Why you need it:** Understanding why having a 'Plan B' changes an opponent's behavior requires foundational knowledge of how rational actors interpret constraints and options to predict future behavior.

The [[concept-commitment-paradox]] is a signaling argument: a firm's *observable* set of options is itself information rivals act on. Without this lens, 'flexibility is a liability' sounds like a contradiction; with it, it is straightforward.

### What to read (enrichment)

- **Thomas Schelling, *The Strategy of Conflict*** — commitment, credible threats, and the value of constraining one's own options. The [[entity-sun-tzu|'burn the boats']] logic is a Schelling-type commitment strategy.
- **Industrial-organization entry-deterrence models** — where irreversible investment or capacity building serves as a commitment signal that shifts entrants' expectations (connects to [[prereq-sunk-costs]]).