1. A sufficiently large distribution will contain outliers.
2. Where is Madoff now?
A sufficiently large enough example which failed to be stopped by investigators for a decade could easily outweigh thousands of outliers ultimately being a serious net-negative and outweighing such a dismissal of facts...
The fact such a blatantly wrong example proceed to scale up for a decade and encompass billions of dollars before being shutdown is quite a good example of how any one investigator's knack for detail in their own limited exposure to particular cases (as in your personal analogy) is hardly sufficient to dismiss the idea that all complex cases need not worry of SEC investigation. Quite the opposite.
If anything that means the SEC has smart people but only a limited capacity of attention as they tend to obsess over details in individual cases (as that is what is required in a significant percentage of them). So as long as you're not one of the easy cases (obvious ponzi schemes or involving large sums, significant amounts of people, or popular advertising) then it's not as worrying a threat as they'd like to make it appear.
2. Madoff was caught because his scheme fell apart, not due to any SEC or other government action.
>...avoiding the ire of the SEC is relatively easy if you set your mind to committing fraud without getting caught.
This statement is mostly what I was responding to. Here is a thought experiment. For the sake of this experiment lets say our economy is perfectly competitive. If all an entity had to do to get away with fraud was "set your mind to not getting caught," then every entity that participated in the economy would be committing fraud because it is in their best interest. That sounds wrong, probably because it is. White collar criminals don't plan on getting caught, they do everything they can to get away with their crimes. To me, that qualifies as setting their mind to not getting caught. Well, they get caught anyway.
The companies you bring up (enron, worldcom, madoff) are outliers in the world of securities fraud. they achieved unprecedented levels of success and then failure. Using these cases are counterpoints to an argument that financial crimes are hard to get away with seems silly to me. After all, none of these frauds were successful in the end, instead, people ended up in prison.
>...avoiding the ire of the SEC is relatively easy if you set your mind to committing fraud without getting caught.
The experiment is a simple application of the economic theoretic framework to the statement above. Nothing more. There isn't all that much to argue about here, as long as you accept the framework upon which almost all of theoretical economics is based.