We all know the quote "the rich get richer and the poor get poorer" I heard this quote when I was in high school now I'm grown up. I always wondering why?

Is it that the rich have already wealth the day they are born? Have savings and investment?

While the poor doesn't have any of those?

The point is I started in low before having some savings and investment. I'm not saying I'm already rich but I can say that I'm better than before. Can you guys share your ideas with this topic.