To put it bluntly, Google is happy-clappy hippie wonderland in comparison to Apple, yet there are no stories of the top echelon being absolute cunts to each other. Success is not reliant on dictatorship. You don't have to be a horrible person to be honest, you don't have to be a tyrant to demand and foster excellence.
Exactly because the dictatorial aspect can as much backfire as it can succeed. Remember Jobs had his fair share of successes and failures, its that the successes were mostly accumulated up towards the recent part of his life thus making him look more successful than he probably was.