[pktgen]

> They wouldn't be as profitable, sure. Neither would Stripe.

It shouldn't even affect Stripe all that much. The CC fees are just a pass-through expense for them; their product is the infrastructure value-add, which AFAIK nobody is suggesting needs to be price-regulated.

One of the reasons the Federal Reserve was created was to eliminate rent-seeking by banks in check clearing. (The previous system was that banks would clear checks directly among each other, leading to abuses where banks would charge exorbitant fees to other banks.) I'd argue credit/debit cards are just as important today as checks were in 1913. A functioning economy requires a functioning payment system.