Consumers are increasingly looking to save on free shipping and retailers are responding with promotional offers.
消费者逐渐期望在免运费上省钱，而零售商以促销的方式回应顾客。
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Banks are already responding by trying to charge for services that previously appeared to customers to be free: several, including JPMorgan Chase, have proposed monthly fees for accounts.
Responding to anti-dumping has the characteristics of public goods, so the action "free-riding" has easily arisen and trapped the dilemma of collective actions.