Allocation of responsibility
The analysis necessary to identify relevant information, relevant risks and the steps necessary to devise appropriate remediation procedures and solutions can be undertaken at a point in time as a discrete project. It is relatively straightforward to complete such a project, publish your policies and to conduct initial training. The temptation and natural tendency is to regard the completion of that work as a job done. This is particularly the case because your policies can serve as evidence of compliance and may even be referenced to clients as evidence of your awareness of the relevant issues and an indication of your commitment to cybersecurity.
See Allocation of responsibility.