A business leader has to effectively influence how other people think so they make decisions that improve results in a sustainable way.
However, that includes impacting both day-to-day business performance throughout the organization, but it also includes getting people to think about the structure of the business and the way it goes about systemically achieving results. You may have effective people working very hard in a system that is outdated or vastly ineffective, or you might have ineffective people making poor decisions in a system that has the capacity to thrive. Ideally you want to have both. Effective people working in an effective system or structure.
As you influence people in your organization get them to focus both on performing well within the existing system and thinking about how to improve the system. And then be open to their suggestions. Over time you want to influence great performances within an ever-improving system.