Batman is a man of action. At night, he roams the streets fighting crime and bad guys. But he knows that he can’t just fight the bad guys. He has to stop the bad guys from becoming bad guys in the first place.
So he takes action of another kind: he donates money.
The authoritative sources at Wikipedia tell me that through the Wayne Foundation and its subsidiary foundations (the Thomas Wayne Foundation and the Martha Wayne Foundation),
Wayne not only addresses social problems encouraging crime and assists victims in a way that his Batman persona cannot, but the arrangement also provides a large network of connections in the world of charities. He finds out about the newest trends and newest arts, and at the same time maintains connections to the streets through the soup kitchens and social services groups, which augments his crime fighting efforts.
Thomas Wayne Foundation
The Thomas Wayne Foundation is a foundation for medicine and medical help. This foundation gives annual awards for medical breakthroughs and lifelong commitment, similar to the Nobel Foundation. The Thomas Wayne Foundation is also responsible for funding the Thomas Wayne Memorial Clinic in Park Row, Gotham’s infamous Crime Alley. The foundation funds and runs dozens of other free clinics all over the city and in other trouble cities, such as Blüdhaven.
Martha Wayne Foundation
The Martha Wayne Foundation is a patron and supporter of arts, families, education, and tolerance. The foundation supports and helps to run a number of orphanages and free schools, and provides teachers for those who have learning difficulties. Artists can apply for grants from the foundation to help support them in furthering the arts. The foundation sponsors companies like Family Finders Inc. in Gotham. Family Finders is an organization directed at finding lost people and uniting families. The Martha Wayne Foundation also sponsors and runs dozens of soup kitchens within the city.
Batman is different from other superheros. He has no special powers or magic rings. He is a man, but he is a superhero because he acts for what he believes in. Sure, being a billionaire helps, but Donald Trump is no Batman.
Batman is a superhero because he acts.