it is a very different kind of state than egypt or even tunisia. the oil wealth is astronomical, as you said, and the country has never really been unified. it's one of those states that was a cobbling together of tribal areas under a dictator, and that lack of unification has always required a heavy hand to bring under any banner. it will be a very volatile place if they manage to completely oust ghadafi.
also, i keep thinking that with each rebellion that occurs we are seeing the issue become bigger and bigger in general. if libya falls, i wonder what will come next? there are some really, really big ones that you have to start wondering about if this sweep of revolutions keeps building steam.