In defense of the Corporate CEOs, they DO know quite a bit about how to run a business, and have the high Business skill to do it. As for security, that's not their specialty. And every business cuts corners to increase its profit margins. The only way they could GET that wealthy is by cutting corners and doing things on the cheap. If they spent loads of money on security, CEOs would have much less money for drunken cocaine-fueled orgies with prostitutes. And the Elite Security types they employ are like Blackwater... privately owned armies, basically, with military training that was funded by taxpayer dollars, prior to their early retirement from the military.
Anyway, look at it like this. A bunch of Roman emperors all got assassinated in ancient Rome. So what did the next guy who became emperor after that do to protect himself? Well, whatever it was, it didn't work, since he got assassinated TOO. And that just happened again and again and again, and it took forever for the Roman Empire to develop proper security, since it was almost impossible to get all the security guards to actually be loyal to whoever the current emperor was, and not be susceptible to bribes and such from ambitious people seeking to become the next emperor. (I am traveling overseas and I'm in Rome, Italy right now.) And in modern times, we've had, what, like 4 U.S. Presidents who got assassinated throughout American history? Even though they have better security than anyone else in the country. Corporate CEOs don't have security remotely as good as U.S. Presidents, in the real world. The REAL thing that keeps Corporate CEOs relatively safe is that there are so many CEOs of major corporations that killing just 1 of them wouldn't have much of an impact on the corporate system, and they basically have strength in numbers. That is something the U.S. President doesn't have, since there is only 1 U.S. President at a time, making whoever has that job a much bigger target than any run-of-the-mill CEO. I mean, I have seen Stephen Colbert and billionaire CEO Richard Branson physically fight each other by throwing water in each other's faces on TV. I doubt Richard Branson has any real security with him when he's on the Colbert Report... if Stephen Colbert wanted to, he could probably have any guest on his show that he doesn't like EXECUTED... even famous and wealthy guests. Luckily for the rich and famous, most talk show hosts are not assassins. Except for Conan. He's a barbarian... before becoming a talk show host, he went around raping and pillaging. You can tell he's a Viking because he has the red hair, which strikes fear into the hearts of the Vikings' enemies.