Yes and no. We don't need another "Network" until "Network" no longer makes a relevant point or doesn't cover the story adequately. It still does.

Simply rehashing the moral of someone else's story isn't creating, it's copying. How many trite teenage version of Shakespeare plays can you sit through until the original impact of the story is meaningless?

You gotta say something new to say. (Or relatively new... the old adage is usually correct.) What is an artist to say -- The media is just like it was when Network was made, but now it's worse?

Besides, didn't Michael Moore cover the TV business pretty throughly in "Adventures of a TV Nation?"