I took a philosophy course in my university focusing on law, covering contracts. The professor gave an example "a band wants to play at a venue, they make a contract; what happens if the venue burns down, who owes who money?"

There are definitely edge cases, but it doesn't feel too hard to specify a "catch all", and if the other party doesn't like it, they should clarify those terms too. Feels easy enough. Reminds me of "burden of proof tennis" - if the catch-all isn't satisfactory to you, carve out an exception the other party accepts.