This article in New Scientist predicts the death of sole authorship as digital tech forces writing to become collaborative. Yes, there are experiments in that direction; but I disagree. My comment is below the original article, and also right here:
Letting the readers prioritise story threads? I don't think so. This means collaborating in the first draft - which is usually unreadable. Most writers require at least three drafts (often many more) to produce something worth submitting to their publishers, at which point the editorial process begins. I don't think technology leads to art-by-committee. In the long term, it will bring creative powers back to individuals. When a single person can create CGI movies on a handheld device (or ubiquitous processors in smart buildings) then the novel will truly become something new, different and exciting.