Whether people are liable is a question for the courts, and I suspect they simply look through the tech and ask "do you end up with a copy of the work?"
(unless you're an AI company, in which case you can copy the whole internet just fine)
But that's an unsolvable question. Just like when A is caught on camera stealing a diamond, but A turns out to have an identical twin B. So the prosecutor can't do anything.
But that's an unsolvable question. Just like when A is caught on camera stealing a diamond, but A turns out to have an identical twin B. So the prosecutor can't do anything.