Oil is just about one of the worst things that a country can have in terms of what they can offer to the rest of the world. First, the government can easily get its hands on the money it needs, therefore ensuring success without the need to tax people to hell. Since the government is not dependent on the people, the people have little/no say in what goes on, nor do they have any interest in ensuring that a stable government exists.
In my opinion, this is why the majority of the middle east is failing so miserably. Not only do they have absolutely zilch to offer the rest of the world (except for oil, of course), the people do not seem to have an attitude with a willingness to change their current situation. Call it passivity, ignorance, or even oppression but I still maintain that they are doomed in the future if most of them don’t change their current situation now.