If everyone is a leader, who will be a follower?

Everyone is different - with different strengths and weaknesses. There are those who relish being in the spotlight and those who wish to take a somewhat more anonymous or less adventurous path. So, it is unlikely that everyone can be or wishes to be a leader.

There will always be those who excel, who are happy to push themselves to the forefront and, similarly, there will always be those who wish to follow a leader. Perhaps the gentler souls, those who are less confident or those who simply do not enjoy the onus of responsibility.

And, ultimately, it is difficult to be a leader is you don't have any followers!