Theory predicts that in markets with increasing returns, the number of differentiated products and resulting consumer satisfaction grow in market size. We document this phenomenon across 246 US radio

NBER1999-10-01 更新160

BNPL use as a payment method for e-commerce in 7 countries in Europe and NA 2024

先买后付（BNPL）

电商支付

Share of consumers in selected countries in Europe and North America who used buy now, pay later (BNPL) to pay for e-commerce in 2024

Statista60