Tamsen Webster explains why multiple people often come up with the same idea independently at the same time. What makes you a leader isn't the idea itself, but your unique process for thinking through how and why you arrived at it.
Chapters
And this is a phenomenon, as surprising as it might be to you, that happens all the time, where two different people in two completely different places come up with the same idea, but sometimes from very different experiences and for very different reasons. So just focusing on what you think isn't necessarily the thing that will make you a leader. The answer actually lies in that process part, because how we think about something and why we think that way is almost always, if not actually, unique to the person thinking it. Even if you have the same thought, even if some of your principles and values are the same, why you think what you do, how you think, in other words, is always different.