Putting people in jail for doing bad things is a signal to future people who want to do those bad things that they will suffer consequences for it. This will make them rethink doing those things. AKA "deterrence"
If people can do these things and get away with it, why wouldn't they? They make billions of dollars doing this and have no chance of suffering any negative consequences. If you were in a room with a billion dollars on the table and you knew you'd be free to take it and no one would ever come after you for it, wouldn't you take it?
> You can cut a snake off, but there are more, who were trained by {executive}
If your boss told you to do a bunch of things, and then got thrown in jail for doing exactly those things, are you saying that you would keep on doing them? Most people wouldn't.