Doesn't require conspiracy. It's in the best interests of retailers to peddle gift-giving, so they do. This peddling increases gift-giving, or the retailers wou

Doesn't require conspiracy. It's in the best interests of retailers to peddle gift-giving, so they do. This peddling increases gift-giving, or the retailers would stop doing it. Therefore it's safe to assume that gift-giving rates would be lower if the retailers did not peddle it.