> It's really complicated, and commodity markets are a gross oversimplification of how it works. Trying to model it would be a nightmare.
But now your argument is "it's complicated and there's no way to know" which isn't a strong claim that the status quo is to the advantage of the customer.
Meanwhile the portion of the fee that doesn't go directly to the cardholder is a deadweight economic loss, which, in general, is only to the advantage of the parasite extracting it and to the disadvantage of everyone else.
Notice also that the most likely alternative to "it actually harms even the 2% cash back customer" is "it's barely better than breakeven to even the 2% cash back customer and harms everybody else." Which is hardly a reason to keep it.
> If interchange fees were 0 then you would still pay the other fees, which do not go to the credit card company.
Ah, but that's the issue. You wouldn't. Because the rewards programs are a monopolistic practice.
Suppose I want to start a competing payments network and my sales pitch is I charge low fees. I'm only charging 0.05%, and provide free code that does the basic thing Stripe does, and keep the costs down by using anti-fraud tech the existing networks don't care to invest in because they're shifting the cost of fraud to the merchants and payment processors. The merchants are immediately on board if I can get cardholders. But the cardholders won't use it because no rewards programs.
Take away the rewards programs and now the network with the lowest processing costs will be the most widely accepted, and then customers want those cards because they're more widely accepted and otherwise indistinguishable.
But now your argument is "it's complicated and there's no way to know" which isn't a strong claim that the status quo is to the advantage of the customer.
Meanwhile the portion of the fee that doesn't go directly to the cardholder is a deadweight economic loss, which, in general, is only to the advantage of the parasite extracting it and to the disadvantage of everyone else.
Notice also that the most likely alternative to "it actually harms even the 2% cash back customer" is "it's barely better than breakeven to even the 2% cash back customer and harms everybody else." Which is hardly a reason to keep it.
> If interchange fees were 0 then you would still pay the other fees, which do not go to the credit card company.
Ah, but that's the issue. You wouldn't. Because the rewards programs are a monopolistic practice.
Suppose I want to start a competing payments network and my sales pitch is I charge low fees. I'm only charging 0.05%, and provide free code that does the basic thing Stripe does, and keep the costs down by using anti-fraud tech the existing networks don't care to invest in because they're shifting the cost of fraud to the merchants and payment processors. The merchants are immediately on board if I can get cardholders. But the cardholders won't use it because no rewards programs.
Take away the rewards programs and now the network with the lowest processing costs will be the most widely accepted, and then customers want those cards because they're more widely accepted and otherwise indistinguishable.