All ccs are just a protocol which can send verifiably discrete packet w/o a central server verifying the discreteness, and with some fancy branding on the packet type. It's as if people felt very tribal about POP3 vs. IMAP, and the IMAP foundation put out branding and POP3 was a FOSS project. Protocols in that sense can't really be ever banned. It's like banning a math proof.

CCs play a role, but they are not the single factor that enables rware, by any means. For instance, it's a lot harder to pop a meat processing plant or coastal pipeline if they didn't hook up IoT to anything and everything OT-related, and ICS was awful at integrating vis b/t IT and OT networks in their plants. Or, for instance, if cyber insurance companies are forbidden from paying ransom, then the economic pot is suddenly dry. And so on...