Pinduoduo

Pinduoduo entered Chinese e-commerce when Alibaba and JD.com already controlled everything. The battle was over. The market was won. Pinduoduo could not afford advertising to compete with incumbents. They couldn't outbid for traffic. So they invented group buying, a model where customers got better prices when they recruited friends into the same purchase agreement. A customer saw a product at twenty dollars. They shared with three friends. The price dropped to eighteen. All four bought at eighteen. Everyone won. Social sharing happened naturally. Customers directly benefited. No budget. Every buyer became a salesperson recruiting friends. The incentive was simple. Lower price motivated sharing behavior. Customer acquisition cost dropped to near zero because existing users recruited new ones.