Why wait until death? Why not start right away? All his entities are just getting wealthier each year. In 2010 Bill Gates wealth was 50 billion. Now it is 100 b

Why wait until death? Why not start right away? All his entities are just getting wealthier each year. In 2010 Bill Gates wealth was 50 billion. Now it is 100 billion. 15 years after the announcement and "philanthropic" work. Can you explain that.