[avianlyric]

None of what you’ve mentioned has anything to do with Visa and Mastercard. Visa and Mastercard are just payment networks, their whole business is literally just transporting transaction information from payment terminals to banks and payment processors, plus keeping track of all the numbers (which is pretty important).

Payment networks don’t provide credit or any kind of liquidity whatsoever, that entirely provided by the various financial entities that communicate via the payment network. The reason Visa and Mastercard haven’t been easily replaced is simple network effects, nobody wants to integrate with a payment network where there’s nobody to transact with.

[jasonfarnon]

I had no idea visa/mc didn't bear the cost of fraud. I remember Paypal almost getting killed by fraud in the early days, and I always thought of Paypal as basically replicating visa/mc for online purchases. I didn't realize they were doing so much more than visa/mc by assuming fraud risk.

[AdamN]

PayPal was a counterparty so if one side didn't pay or there was a dispute then PayPal was stuck in the middle. Visa and MC are just payment networks and have minimal risk. The only risk I think would be criminal liability (handling drug money) or maybe if the bank goes bankrupt before the payment is due to the merchant (but even that might be borne by they merchant - not sure).

[throwaway290]

MC/Visa do drop merchants who do bad stuff (remember CSAM on PH) so I guess they bear some of it.

[eastbayjake]

I replied downthread but I used "value chain" deliberately -- there are lots of intermediaries of which the card networks are just one link in the chain -- and the statement above is about risk being borne (and value being created for consumers) by the entire value chain that is different and difficult/impossible in a FedNow-style immediate settlement model: https://news.ycombinator.com/item?id=46964968

[avianlyric]

Mastercard and Visa also use immediate settlement models and basically always have done. The settlement buffer between end parties is created entirely by entities that are all basically banks.

There’s nothing special about Mastercard and Visa rails that prevents you recreating all the functionality that the broader ecosystem provides, without Visa and Mastercard. Hell all of that functionality could be provided by exactly the same companies and banks that provide it for Visa and Mastercard networks.