Steve Coll has a smart post on The New Yorker in which he stresses the need for an examination of journalism --- not of the business model --- in properly addressing the threat to the craft.
He calls the rise of investigative, accountable journalism an accident of history, a result of a "confluence of quasi-monopolistic business models, the elevation of the scientific method in American society during the post-war period, and the cultures of professionalism that grew up simultaneously in the social sciences and practical professions (not just journalism, but law, accounting, economics, etc.)."
But the focus on producing a new business model is misguided --- the stuff for venture capitalists, he argues.
"This journalism and these journalists—not alternative ways to make a dollar from news and information—are what should concentrate our minds."