Yes, Willie Sutton robbed banks because that was where the money was.
More seriously, I don’t fault Professor Rotberg for studying corruption. However, it is like explaining sin. We all know what it is but not how to stop it. Neither religious authorities, nor governments, nor educators, nor politicians have ever found a way. I am glad Professor Rotberg has found corruption to be universal, but that only makes it impossible to blame any country, any profession, any race, and gender, etc. So what have we then? The human race is what it is and we have to live with it. Most people realize this. Those who don’t can bang their heads against a wall or become a professor.