The cafeteria anecdote is interesting because I've been in line in a cafeteria with a billionaire (former) CEO - Phil Knight. Very personable (he certainly didn't cut in line) and he seemed comfortable in his Nikes and jeans.
Knight built his empire quite differently than Jobs. While it's not great being a developer at Nike, the company's atmosphere is somewhat laid back. Things still get done and they make a lot of money doing it.
I have been many times in the Apple cafeteria back when Steve was there, and I never saw him cutting lines as described.
I am not saying that it did not happen, but I will not make it a statement that he was always like that neither
I never saw him cut in line, either; he was always in a hurry, and could be short, but I didn't see him pull rank, ever. He did almost run me over once.
Knight built his empire quite differently than Jobs. While it's not great being a developer at Nike, the company's atmosphere is somewhat laid back. Things still get done and they make a lot of money doing it.