Why does a Project Manager need to be proactive?

Proactive Managers have higher chances of finding out the risks and implementing solutions in order to minimize them. Being proactive, lets them have more control over their project tasks and resources. They can keep a better track of all tasks and issues to work towards implementing small changes and improvements for higher productivity and efficiency. Organizes frequent meetings for developers to talk about their problems, brainstorm solutions, share best practices etc. Compares the actual costs and time spent on tasks on a weekly basis with the planned numbers.