To address the concerns of departments that are resistant to the implementation of a BI system, I would first conduct a cost-benefit analysis to demonstrate the potential return on investment that BI can provide. This could include metrics such as increased efficiency, improved decision-making, and enhanced customer satisfaction. I would also work with the departments to understand their specific concerns and address them directly.   For example, if the concern is about the cost of implementing a BI system, I would explore options such as using open-source tools or implementing a phased approach to the rollout. If the concern is about the effort required to implement and use a BI system, I will offer training and support to help ensure a smooth transition. By demonstrating the value of BI and addressing the specific concerns of the departments, I believe we can successfully convince them of the benefits of implementing a BI system.