If the charge back is approved, by definition it's not abuse, and the issuer makes money on successful chargebacks. They also make money on you having an account there. And they have the responsibility to give your money back if they close it. Plus you're ultimately, if indirectly, backed up by the full power of the civil justice system, courts and judges and all that. It may be very flawed but let's buy pretend it's as nearly as bad as the whim of one underpaid Apple intern with no real incentives or accountability.