Metamorphically speaking, life is really unfair. And if I would base with the information given. Some were practically born rich, some were sadly born poor. But the thing here is, how to live our life? Some rich people, they have all the thing they want in just a snap of their fingers but at the end of the day, they feel incomplete. While some poor people, having companions to get the days go by is simply a happiness for them. I think it's not merely the money itself that makes us rich, but the amount of appreciation we have in our lives. We all differs with talents and intelligence. But we all have opportunities that knocks a lot of times --- it's just a matter of choosing what door you will open; we all have a perfect timing for everything --- it's just a matter of realizing what is what. We are all rich by all means. Let's just don't forget to add spices like hardwork and efforts.
Life is just a random series of events. Whatever meaning you ascribe to it is arbitrary. Life isn't fair or unfair, it just is what it is. Things happen, and if you ascribe negative values to this events, you say they are bad events. If you ascribe positive values to them you say they are good events. But life isn't fair or unfair because the things that happen are all completely neutral. The universe doesn't have intent or purpose, so you can't assign meaning to the things that happen. It's only on reflection that you make a judgement about what anything means, but that's always an arbitrary assessment. You may associate being "rich" with positive outcomes, but that's your value, not life's.
The purpose is simply to experience as many things as possible. That's it. Don't try to read deeper than that or you might get confused.
Being rich is not necessarily a good thing, but I think that nearly everyone has the opportunity at least once in their lives. The problem is most are not aware of it at that time and let it pass them by. Such opportunities are only recognized in hindsight. If we want to become rich, we have to expose ourselves to good opportunities and take them when they come by.