Personally, I'd hate to have his position. I can't imagine the pressure of trying to fill the shoes of Steve.
The problem I find is ever climbing that ladder without being in an extremely lucky position. I've had a career track I'm both proud and grateful of, and still see no "feasible" route to ever having even orders of magnitude less than that sort of earning potential short of winning the lottery (real or startup, take your pick.)
I'm sure I'll get the traditional rebuttle of "but CEO's provide some service worth xxxm"/"the job is so much more difficult" but what little research I've found on correlation of executive salary to performance has disagreed, and I'd respond with the somewhat engineer-centric answer that without a CEO, you still have a product. Without your line devs, you have nothing but a talking head.
I personally would rather be middle class and supporting something that improves the lives of all people than having exhorbitant personal wealth that insulates you from reality. Look at money as a means to an end and it becomes less of a fetish.