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Canon
Network Effects
Academic / Economics · Metcalfe's Law (1980)
Confidence: High
The value of a network increases proportionally to the square of its users, creating powerful competitive moats.
Core Concepts
The Problem
How do some platforms become dominant and nearly impossible to displace?
The Claim
Products and services that become more valuable as more people use them can achieve self-reinforcing growth and market power.
Key Evidence
- •Metcalfe's Law describes exponential growth in value.
- •Examples: social media, telecommunications, marketplaces.
Practical Implication
Understanding network effects helps identify investments and build products with defensive moats.
Nuance & Limits
Network effects can be strong or weak, same-side or cross-side, and they can reverse if users leave en masse.
Source Material
Citation Density
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