> - For many consumers there isn't sufficient money in the account to settle all the one-time and ongoing transactions they are liable for -- credit cards are giving you a revolving loan, there's risk it will not be repaid, and that risk ends up reflected in processing fees.

Their risk is covered multiple ways (as reflected in their profits). You pay an annual fee to have a card. You pay per transaction, you pay for paywave, you pay 21% in interest.

They cover their risk by hitting every possible angle.