>I would say this is an example where a duopoly is useful for consumers. The duopoly allows consumers the ability to use a credit card pretty much anywhere they

>I would say this is an example where a duopoly is useful for consumers. The duopoly allows consumers the ability to use a credit card pretty much anywhere they want in the US Going by that reasoning a monopoly would be even better, as the card would be accepted everywhere. The consumer pays by lack of innovation and high scheme fees.