They still make money on people that pay off. Just not from you. The business pays for the privilege of being able to process a particular credit card. And they also pay a percentage of the transaction to the credit card company. They PREFER people who let a balance roll and pay interest, often rewarding them with a higher limit more often than others. But they get paid coming and going, they’re not worried about a few people who avoid interest.
Makes sense. I guess I won’t bother leaving any balance on the card from now on.