Those people want everything to go their way. And when it doesn't go their way, they would do something to make it their way until it finally happens. It's like taking all the ice cream and never giving any of it to anyone else and bitching and going apeshit when they do get "your" ice cream, then later, you hog the damn machine again when they're not there (possibly because you've done away with that person).
And then there's losing for good. God forbid the privileged one be a loser once. They'll claim it's the end of the world and other shit if that happens.