Originally Posted by
tmiw
Depends on what you're regulating. Adequate regulation, for instance, likely would have gotten chip and PIN (not signature) supported at nearly 100% of US merchants and banks by now...
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Adopting chip and PIN isn't really a price control, which is what I'm arguing against.
I could see some merchants dropping card support - particularly small salons and restaurants if chip and PIN was mandated by legislation.
I don't see an issue with adding 4 additional card network competitors. Banks might win as well since they'll get sweeter offers to support cards from eight different networks.