Think about the headache of remaking the VPS from scratch, rehosting everything on it and having to reset any password that is shared with another environment.

Think about the headache of remaking the VPS from scratch, rehosting everything on it and having to reset any password that is shared with another environment. Also consider the cost of dealing with the data falling into the wrong hands. Even data that is not personal can hurt you financially in the long-term. The cost of running security tools is minimal when you take it all into account.