Leader capability OR Leadership Capability?

The discussion in this article focuses on the capability development of team leaders and first-line managers who hold functional roles within industrial organizations. Organizations invest substantial amounts of time, effort, and financial resources in developing their leaders. Yet, despite these investments, many leadership development programs fail to deliver the expected results. While some organizations consistently succeed in developing high-performing leaders, others struggle to realize meaningful returns on their investment in leadership training and development. This raises an important question: Leader's Capability or Leadership Capability?