The one case where I can see it being useful is when 1 news site has some exclusive content that they post, and then every other news site copies the story by l

The one case where I can see it being useful is when 1 news site has some exclusive content that they post, and then every other news site copies the story by linking to the original and paraphrasing the whole thing. I see this happen a lot and I can totally see how it disincentives creating original content when every other news story just copies the story and users only read the first article they see about it.