Not all can become rich, that is the system, and because all of us wish to be rich there will always be poor people, again because there is no light without dark. Simply said people will do anything to become rich, that also means that some people will destroy everything and everyone just to become rich.
Money needs to come from somewhere, and while we fucking each other to get some money rulers rule the world and simple at our wishes and what we do every day to make this wishes come to reality. Sadly that will never stop, and probably jazz between rich and poor people will just be wider in the future.