It's worth noting that plagiarism is a separate concept, and not really a legal issue (unless of course you are bound by contract not to plagiaries, which I'd imagine most academics and journalists are in their employment contracts). This is also why the MIT license needs an attribution clause.

Karl Fogel proposed an experiment, that legislators introduce a bill proposing a right to attribution, essentially making plagiarism illegal, to gauge the media industry's reaction. His prediction was that they would balk at the proposal.