Jobs's ego could certainly have been a large part of it. But doubling salaries isn't a solution because the competition will raise salaries to counter their people leaving and you'll be back in the same insecure position while paying twice as much.

And please note, I'm certainly not defending any of this behavior, just examining possible motivations.

(And well that's how exploration of different narratives goes, it's a constant struggle compared to simply picking from the limited two-sides-max of mainstream press)