I think the other productive route is to through Dutch book argument: if your beliefs violate probability axioms, you can accept sure-loss bets. Humans and superintelligences both stray from probability theory, but superintelligences can notice when we are making bad bets, while the reverse is not true. Therefore, either superintelligences will be able to turn us into money-pumps, or we will refuse to trade in some moment and the only profitable option for superintelligences will be to take our stuff.
I think the other productive route is to through Dutch book argument: if your beliefs violate probability axioms, you can accept sure-loss bets. Humans and superintelligences both stray from probability theory, but superintelligences can notice when we are making bad bets, while the reverse is not true. Therefore, either superintelligences will be able to turn us into money-pumps, or we will refuse to trade in some moment and the only profitable option for superintelligences will be to take our stuff.