Not directly answering your question, but something I thought was relevant. I recall some years ago, there was a movement to encourage large donors and philant

Not directly answering your question, but something I thought was relevant. I recall some years ago, there was a movement to encourage large donors and philanthropists to make themselves more visible, rather than donating anonymously, in the believe that this would encourage other wealthy people to contribute as well, a kind of peer pressure or leading by example.