> if you and the AI are on the same page

But that's the thing, you and the AI might be "on the same page" for one prompt, and then you aren't for the next.

> and yet judges and lawyers agree on how to interpret most of them

Um, no? Lawyers and judges frequently disagree on how laws should be interpreted. And it is often not written in a way that a layperson can easily understand.

> defined arbitration process to resolve any new ambiguities.

That is famously slow and expensive, and can resul in something very different from what the lawmakers originally intended.