Somehow, the idea of a single, centralized control point for all information strikes me as not exactly a "best option."
One central AI is not a good idea. What is a good idea is creating something similar to the International Atomic Energy Agency to do the same thing it does for atomic energy and nuclear weapons. We need a strong, verifiable AGI non-proliferation treaty. It would be a pain. Everyone would lose their rights to unlimited numbers of hundred thousand dollar H 100 GPUs and the like, but it would be worth it in the end.