He's also done a lot of wide-spread horrible things to get that money though, that's the thing, the good stuff billionaires do rarely makes up for the stuff they've done to get that money in the first place. The most fantastical thing about Batman is that he and his parents are usually depicted at face value as good rich people who get their money legitimately without hurting anyone and then only do good things with that money. And despite that Gotham is still an eternally crime-ridden cess pit. Most billionaires donate huge amounts to non-profits or start their own. Hell I bet trump himself has done plenty of philanthropy, but that automatically doesn't make up for the way they earned their blood money in the first place. Is Bill Gates going out of his way to lobby for taxing the rich, or universal healthcare, or other systemic changes that would help a lot of people but likely reduce the rate he accumulates wealth? Because he has more than enough money to make large waves in those political arenas and still be rich for the rest of his life. If he never made another cent and gave away 90% of his money to homeless people he would still have enough left to be rich for the rest of his life.