That really is the greatest achievement of card issuers and networks: Taking a huge cut on every payment and throwing scraps to cardholders while making them feel like they're landing a great deal (whether in the form of points or the ability to do chargebacks, which is actually a legal right, not industry goodwill!) or even "tricking the system".

> Fraud-related costs are also one of, if not the largest single contributor(s) to payment processing fees.

That's not true. Fraud (counting both prevention and losses) accounts for less than a quarter of issuers' interchange revenue: https://www.federalreserve.gov/paymentsystems/2023-interchan...