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There's a bit of misunderstanding in your statement. Most of the money made by companies in payments systems comes from transaction fees, not from interest. When companies offer you better rewards, that's them competing to have you use their credit card rather than the competition's.





Sorry to tell you but that's not true. Literally the top Google result says the contrary:

> "Out of the various fees, interest charges are the primary source of revenue." [1]

Yes, credit cards charge a large transaction fee, but wind up refunding a large portion of that back to the consumer in the form of rewards, so these days that's not the main source of profit.

[1] https://www.valuepenguin.com/how-do-credit-card-companies-ma....




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