How do corporate despots survive?

The fabulous eye of cartoonist Tom Fishburne is in spot on focus with this amusing array of corporate characters. If I was a talented artist like Tom I might add the Talk To The Hand guy and Mrs Shssssh You Have Nothing Interesting To Say While I'm In The Room - both of whom I have encountered. And let us not forget Mr Jump-Up-And-Down-On-The-Spot-Ranting-In-The-Middle-Of-An-Open-Plan-Office whom I met on one, very memorable, occasion along with 150 aghast colleagues. Now, I hasten to add, I have worked with many brilliant, inspiring people but there have been a few really, really bad ones along the way. And I am not alone. One such baddie is the bane of a good friend's life. 
My pal is pretty resilient but has extreme challenges with one of those 'Unique Individuals' who everyone seems terrified of, who has single-handedly added triple digits to the sick leave stats, yet whose budget and organisational power remain solid and growing, year-on-year. (Think Edward Tufte's Stalin doing a PowerPoint presentation for more of a pen picture).

In his three million years of service with the organisation, scary, unpleasant, upward managing, nightmare Head of Function big cheese has clawed his way up and all the while successfully avoided any attempts at leadership support, training, performance management and Decent Human Being immersion courses.
Yet it's my pal who is being coached on how to handle this despot and all to improve communication! It's a complete mystery to me what these fiendish folk are good at apart from filling dead men's shoes or roles left by better people having babies. Yet how do they survive? If there's a war for talent, if CEOs are generally wanting to embrace employee engagement, and if research shows people leave their manager not their company, tell me how do they get away with it? If anyone knows, then do please put me out of my misery. 

Read more about 'horrible bosses' from body language guru Carol Goman.