Network Effects
Network effects occur when a product or service becomes more valuable as more people use it, creating self-reinforcing growth loops that can produce winner-take-all dynamics. Understanding the network effects mental model helps founders, investors, and strategists identify when a business can achieve exponential rather than linear growth, and when competitive advantages become structurally unassailable. Learning how to use network effects is essential for platform strategy, market entry decisions, and evaluating whether a business can sustain long-term defensibility.