I highly doubt there is ever going to be "effective governance" of technology for multiple reasons. It would require impossible foreknowledge of the impacts of every possible tech and dystopian levels of control to prevent new ideas from coming into play. We cannot even get the direction of impact right a-priori. Even if they had that this dystopia would have to remain both stable and unmutated over generations. All the while their control creates their own counterforce, incentivized to invent tech outside of their control to topple the forces of stagnation.