If we get effective AI, humans aren't going to remain in charge -- that much is inevitable. If you had a governance machine that made your country perform 10% better than other countries, so long as you deferred all decisions to it, you'd defer those decisions or get left behind. And AI probably has the potential to do far better than 10%.
Either everyone, globally, gives up on AI development, or AI is going to be in charge of all human development, and we'll just be along for the ride.
Right now, the work ahead is to shape AI so that the decision making it does as it carries us along is something we like.