Again, "you" can't tell content providers not to talk about North Korea or radical Islam -- otherwise no content would have integrity. Large corporations, especially, and governments need to make their networks impenetrable. I don't know why they can't do it, but a lot is at stake. Do ISP's, cable providers, and social media sites have better security than Sony? I believe so. But no one has explained even how a company like Sony was so vulnerable -- outside of possibly a disaffected insider.
Update: Later Dec. 18
CNN reports that apparently hackers stole Sony systems administrator credentials, to "fake" an inside job. And, contrary to earlier reports, there is more evidence that some of the actual hacking may have originated inside North Korea, and been routed to other countries. Still, it seems that Sony did a rather unprofessional job of managing its security, and didn't take symptoms seriously. Why didn't it hire a professional security company?
There is also a question of why crudely written hack or email (with language sometimes similar to what you see in overseas spam) was reported in the press, and not immediately sent to law enforcement in secret, so that Sony wouldn't be in a public "Catch 22" position. Sony carelessly let itself get "outplayed" just as in a chess game.
Every major corporation (power utilities, banks, Internet service providers) should be reviewing how it protects its administrator security right now -- tonight -- and tighten the ship.