Unpopular opinion: I think a lot of people use charity/philanthropy as a cover to prevent scrutiny against other less than stellar things they have done. See Clinton Foundation, McCain Institute, etc.
http://www.openculture.com/2019/01/how-alfred-nobel-read-an-...
The list is long. Carnegie, Rockefeller, Vanderbilt, Pew, Kochs, ...
Then employ your family members to run the foundation and pay them a huge salary.
I can’t validate this, but I recall the article.