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MENTAL MODEL · M3549

Network Economics

Network Economics
BusinessHigh supportIndustrial Organization
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Updated 2026-07-31

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INTRODUCTION

English translation pending.

CORE DEFINITION

A field of industrial organization that analyzes industries whose products gain value as the number of users grows. It examines network externalities, where each additional user raises the product's value to others; standards competition, where incompatible formats compete for adoption; and lock-in, where switching costs make an installed base self-sustaining. The framework explains why some markets tip toward a single dominant firm rather than settling at a competitive equilibrium. Its scope is broader than the internet: telephony, payment networks, and transport routes show the same structure. Network effects require actual interconnection or compatibility, not merely a large user count.

SCAFFOLDING EFFECT

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- Tipping Point Analysis: ask whether adoption dynamics will concentrate the market or keep it fragmented. - Lock-in Audit: measure switching costs before assuming customers will migrate to a better product. - Standards Strategy: decide whether to compete on a proprietary format or join a shared one.

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When each user's benefit rises with the number of other users, demand feeds on itself: more users attract more complementors and still more users, forming a positive feedback loop. That loop produces multiple possible equilibria, and small early advantages can decide which one the market lands on, which is why launch timing and initial subsidies can matter more than product quality. Once an installed base and its complements exist, switching costs lock users in, so a technically superior entrant may still fail. Where products interconnect, the feedback is weaker and markets stay competitive.

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Source support: Explicit

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    en.wikipedia.orghttps://en.wikipedia.org/wiki/Network_effectZH · Explicit
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