True, true.
But those guy's are usually either really, really dumb (patsies) or really, really greedy. In the case of the latter, they're trying to ascend into the wealth stratosphere - the 100s of millions of dollars level.
The other dudes are just only kind of greedy. They're happy with their $10 or $20 million and stay under the radar.
It's not really that difficult. Adopt Straussian philosophy, build a solid network of like-minded individuals, buy a portfolio of useless patents, mining rights, et al., make sure you keep your accounting and legal issues above board, develop a "marketing" network and, if you can remain content with ten or twenty million, retire comfortably.