Answer 1: the law
Since the court granted the injunction, the legal system must have mechanisms to protect the publisher's interests.
Answer 2: The court, siding with the publisher, believes that an injunction can remedy the harm(to the publisher's financials) cause by the human error (early sales of the books).
The book was sold in error. Imagine if you were the book publisher and you believe that any early leak of the book's content will negatively affect sales and that you have the legal recourse to correct the situation, would you not do so?
Answer 1: the law Since the court granted the injunction, the legal system must have mechanisms to protect the publisher's interests. Answer 2: The court, siding with the publisher, believes that an injunction can remedy the harm(to the publisher's financials) cause by the human error (early sales of the books). The book was sold in error. Imagine if you were the book publisher and you believe that any early leak of the book's content will negatively affect sales and that you have the legal recourse to correct the situation, would you not do so?