One of capitalism's biggest PR scams is the "philanthropist."
The average billionaire donates 1% of their fortune to charity yearly - less than non-billionaires. But when you donate $200 you don't get glowing articles, a hospital named after you and a massive tax write off.
We don't want the oligarchy allocating what should be public funds according to their whims and interests. That can never approach the efficiency and efficacy of allocation according to priorities set by the public made real by their elected representatives and officials.