Sure if you ignore what I wrote, and push your own understanding, it doesn't make sense. Interchange fees are absolutely rent seeking. Them being variable just

Sure if you ignore what I wrote, and push your own understanding, it doesn't make sense. Interchange fees are absolutely rent seeking. Them being variable just makes them even more insidious. Here: https://www.nytimes.com/2023/03/04/opinion/credit-card-rewards-points-poor-interchange-fees.html https://www.nytimes.com/2023/03/04/opinion/credit-card-rewar...