I think you also have to consider that AI with superpowers is not going to materialize overnight. If superintelligent AI is on the horizon, the first such AI will be comparable to very capable humans (who do not have the ability to talk their way into nuclear launch codes or out of decades-long prison sentences at will). Energy costs will still be tremendous, and just keeping the system going will require enormous levels of human cooperation. The world will change a lot in that kind of scenario, and I don't know how reasonable it is to claim anything more than the observation of potential risks in a world so different from the one we know.
Is it possible that search ends up doing as much for persuasion as it does for chess, superintelligent AI happens relatively soon, and it doesn't have prohibitive energy costs such that escape is a realistic scenario? I suppose? Is any of that obvious or even likely? I wouldn't say so.