I don't know why it's different for some people, but it is. I have to think it's something we just don't put emphasis on in our education system or by parents. So pop culture does it for us. When I was a kid everyone wanted to be someone famous; a singer, an athlete, an actor, etc. Today is no different, everyone wants to be an influencer, a streamer, etc.
I think we need to make it a point for kids to understand from a young age that not everyone can be the famous person, neither should everyone want to be. There are so many other options, they only want fame because they don't know anything else.