One of the quieter threats facing organizations right now is not just technology. It is the loss of expertise.

According to the January 22, 2025 Harvard Business Review article on the trends shaping work, more workers will reach retirement age in 2025 than in any previous year on record. At the same time, AI is beginning to absorb some of the entry-level and support work that once helped younger employees learn judgment, pattern recognition, and the craft of the business over time.

That should get a leader’s attention.

For years, organizations assumed expertise would reproduce itself naturally. Senior people would leave, younger people would rise, and the work would continue. But that is no longer a safe assumption. Many companies are now facing a double loss: seasoned people are exiting, and the traditional developmental pathways for emerging talent are weakening.

This means leadership must become more intentional.

Knowledge that used to live in the instincts of a few trusted veterans now has to be captured, named, organized, and shared. HBR points to the need for stronger knowledge management, including ways to transfer expertise through tools such as microlearning, shared systems, and more deliberate connection between expert and novice employees.

But the deeper issue is not just knowledge transfer. It is whether leaders still see development as part of their calling.

Too many organizations have treated people as functional until they become expensive, and replaceable until they become rare. But the companies that thrive in the years ahead will be the ones that rebuild apprenticeship, not just efficiency.

They will create environments where wisdom is passed on, judgment is formed, and younger leaders are taught how to think, not merely how to produce.

AI may speed up the work. But it cannot quietly form mature leaders on its own. 

That still requires patient leaders, intentional culture, and organizations that understand this simple truth:

If you do not build people on purpose, you will eventually run out of the kind of people your future requires.