Comment by pixl97

>You would not be able to drink the milk.

Incorrect, the milk does not disappear. You are contractually and legally obligated not to drink the milk, much in the same way I should not go around killing people, but I certainly have the ability to.

Now, if you sell the customer electrically locking milk bottles which won't open after the contract is over, then the customer "can't" drink the milk, they couldn't.