I must had also all leaked information is usable by providers, customers, shareholders, anyone in the future to negociate more tightly agreements, if any at all, with Sony. This will also cost them money. I believe you don't have a faint idea of the magnitude and impact of this for Sony Pictures.
Suppose you are a script, scenarist, producer, director or any other important job in the making of a movie. How would you feel doing business with Sony given the way they protect your work? It is very likely someone will seek to work with someone else but Sony Pictures.