Basically because if somebody like Steve Jobs doesn't have a Steve Wozniak to build things for him in the start he is more or less a arrogant egoistic tantrum throwing hippie kind of a guy whom nobody would like to deal with.
You meet a genius co-founder like Steve Wozniak very very rarely.
Nearly every program manager is a lesser version of Steve Jobs, that is how authority looks cool and glorified. Giving an impression that the manager is automagically creating success out of thin air while a engineer somewhere pushing 19 hr daily schedules to make it happen doesn't count or is irrelevant.
Steve Jobs reminds of Peter Keating from Ayn Rand's 'The Fountainhead'.