Earlier quoted context omitted.
Getting rich and making the world better are not incompatible, or even unaligned in general. You get rich by offering a good or service that society desires.
No billionaire made the world a better place.
First, "better" is so subjective that it almost becomes a moot point.
Second, a single counter example disproves it.
You don't think Ronaldo has entertained millions of kids around the world and made them very happy to watch him play? I would say that is a good thing.