I understand the idea of a self-improving intelligence, but unless there's a path for it to do so, it's just a thought experiment. The other poster who replied to you has a better idea that civilization can be thought of as the intelligence that is improving itself. Instead of worrying about some emergent AGI inside of civilization, we can thing of civilization itself as an ASI that already exists. Anything that emerges inside of civilization will be eclipsed and kept in check by the existing super intelligence of the entire world.