One problem with that is that the hackers that you really need to worry about are ones who are coming after you: competitors trying to steal IP, business rivals

One problem with that is that the hackers that you really need to worry about are ones who are coming after you: competitors trying to steal IP, business rivals investigating your deals and so on. These high profile attacks like the Sony attack are embarrassing, but the real business damage is probably done in other attacks that no one ever hears about.