The folks like this should actually do a startup. Hardening security is often just keeping up with and following checklists, installing proper monitoring, backup and audit software however for large majority of company it is impossible to hire competitive security specialists. These guys can scale up by hiring 100s of employees who they train on different aspects and contract with small firms like these at annual subscription. That would enable them making much more than $10M. With their current approach they will almost certainly get traced eventually and end up in jail.