Broadly I would tend to agree but... there's plenty of billionaires who give away billions. Rather than wait, just google it. It doesn't mean they're nice people but their money does good. There's no getting around that.

I know that most wealthy people give money either as a performance for others or out of guilt but that's still money given to people who need it. Personally I don't care about their motives so long as their money actually helps.

As for somehow creating some kind of socialist utopia where billionaires don't exist, you would be ignoring our entire history as a species. Sooner or later "some animals are more equal than others". It sucks, particularly if you are the sort of person who has an abundance of empathy but there it is. Best we can do, I reckon, is look after the people in our immediate vicinity. If we all did that mind you then maybe things would get better but I'm not holding my breath.