Here is what I see as the third key reason why enrolment is difficult. It is the nature of some topic.
For some topics, its name is confusing to start with. ‘Leadership’ (or ‘Leadership Development’) is one of these. You pick any 2 people in the workplace and ask them what leadership is. They probably have very different answer. In addition, there is one understanding of the term ‘Leadership Development’ which particularly confuses the communication i.e.
Leadership Development = Any developmental intervention for those in the leadership position.