"It added that 44 percent of the 682 unique IPs executing scans within the past 90 days (as of June 25) came from Tencent Cloud, with the others coming from Amazon, Cloudflare, and Google."
I suppose the sort of people we're dealing with here will pay with cryptocurrency assuming the cloud providers will accept it. It might be a smart regulatory move to make the providers require verified banking details which would enable seizure of at least some assets and a starting point for attempts to trace the perpetrators.