> 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

This is really much less of a thing in Europe, or at the very least in Germany and Spain. Mostly it's the overdraft from banks that you can use as what you call a revolving loan. Most of the visa and mastercards I've had in my life simply debit from my main account.