This isn't necessarily true in the general case, let alone in this specific case.

In the general case, some countries calculate fines according to the criminal's income for this very reason.

In this specific case, fines or, in the case of a civil lawsuit, damages in excess of the amount of money the person illegitimately gained would be sufficient.

Aren't there better targets to make a point with though? Military contractors, oil companies? We're talking about billions of dollars in bribes. Do you think this case will even put a dent in that corruption? This is not a lot of money and as the popularity of this thread insinuates, this is how things have always been. There is no Silicon Valley without these types of deals unfortunately.