If they ban the 'throwaway' accounts, RMT will simply make more, thus using even MORE stolen credit cards to do it. This means that there is more potential that SE will encounter 'disputes' to their subscription fees. The RMT get to leech off of the bandwidth and service of SE for free and the cardholder who eventually realizes their card has been stolen will 'dispute' the charge to their credit card company or bank. This institution will refund the money and then challenge SE. SE will be forced to refund this money.

Banning these accounts invites even more of these costly 'disputes'. If SE knows that the RMT will keep coming back with an endless amount of stolen credit cards (many of which will be disputed when the real cardholder finds out they are being charged), there is no reason to ban the throwaway accounts. In fact, it WILL cost them more money and resources trying to keep up with it when they obviously know they can't.

The best way to combat this is to find the money-holders, as another person said. They also need to figure out how the system itself is working, and shut that down. Banning the throwaway accounts is a waste of time and resources. I believe more measures will eventually be put in place that make this type of RMT harder to do, and a much bigger crackdown on the 'money-holder' mules. If they enhanced their ability to track the way money travels, the money-holding mules would be incredibly obvious.