"The use of bulletproof hosting is particularly bad in the case of Magecart, as it eliminates one of the more effective means of stopping the infection - disabling command and control servers."
It doesn't stop the re-assignment of the IP addresses of the DCs concerned. OK, it takes out anything co-hosted there but of the DC operators want to get back into business then they have to clean up, assuming they can given that they're in bandit territory.