Should we expect others to grow as leaders?

Not everyone can grow up to be a leader. It's not about undergoing certain classes or courses. To become a leader, you must have that something in you, a flame, fire of some sort, that would enable the drive within to grow up and become a leader.

Another opinion goes around the idea itself that it takes a long time to grow as a leader and therefore we cannot expect someone to grow as a leader in a year or two, for some, it may take decades, until the person is ready to become a leader.

To answer the question, we should but it doesn't mean they will.