I do agree that charity is often overplayed and many billionaires give away so little that they barely notice. But Bill Gates definitely is an exception. Of course they don't spend all their money in a few years, that wouldn't allow them to continue their work afterwards.

But the whole life of Bill and Melinda is about their work in the foundation. It's not a side gig for good press, they don't do anything else. I can understand criticism where billionaires have a charity next to their business. But there's no other business left for Bill.

But to be fair, Bill Gates is probably the only prominent example of a billionaire who quit the industry completely and dedicated his whole life towards charity.