That misstates what the potential revolution in dissemination of information is about. A journalist's livelihood isn't tied to the continuation of existing media, but rather directly to their ability to turn words into dollars independent of how. We are not going to have a world in which reporting happens without editors and payment. That's been predicted for a long time, and I believe it's been effectively disproven. People need to eat.
Someone needs to set direction.
A lot of unpaid individual writers can't create the kind of editorial products that people read in everything from People to the New York Times to Harper's. What you almost certainly will have are models of journalism in which there is no publisher . I fear Dave conflates the publishing side with the editorial operations themselves, which is easy to do when you're reasonably cynical about the whole industry itself. The publisher of a newspaper or magazine, whether they own it or are the employee of a larger media concern, is focused on the financial and structural issues of a publication. Publishers are almost certainly threatened by chthonic endeavors.