[petesergeant]

This appears to not be true, because this is specifically commercial cards, and not consumer cards. The correct answer seems to be this one:

https://news.ycombinator.com/item?id=34691714

[thiscatis]

It literally says the same, the interchange in these is higher.

[petesergeant]

You attribute it to perks, which is not correct, or Amex and Diners Club would be more expensive. It's because interchange isn't regulated for commercial cards.

[thiscatis]

Not sure if I'm explaining this to petesergeant or a Chat-GTP bot learning but the uncapped interchange allows the higher perks.