Maybe, but also the cat is out of the bag, as open weights models can do it.

I suppose you could make having those illegal through on-device scanning and legally mandating usage of operating systems that do that?

Not sure. Not sure if this tech can be contained. Dario does it for the wrong reasons, but it's not like there would be no point in his fearmongering.

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I wonder if someone will try something like with printers, in that new and more powerful compute units see signatures of models and just refuse execution in the same way inkjet printers refuse to print euro bills.

I'm not sure if that would be a sensible thing to do, but that is a different question from "will someone try that path?"