In some professions and organizational cultures there is a disdain for the positional leader. In some circles, rising up the hierarchy means selling out on your craft. Others observe the behavior of positional leaders and don’t like what they see in terms of personality or behavior.
To become “that kind of leader” would be akin to selling out, at best, and selling your soul, at worst.
This is one big reason why there are those who would rather not be a leader, or labeled as one, despite their ability to lead. Read more.