In a study published in PLOS ONE, Vincent Larivière, Stefanie Haustein and Philippe Mongeon show that the market share of the five largest academic publishers increased from 20% in 1973 to 50% in 2006. Vincent Larivière explains that while it is true that publishers have historically played a vital role in the dissemination of scientific knowledge in the print era, it is questionable whether they are still necessary in today's digital era.
Larivière V, Haustein S, Mongeon P.,(2015). The Oligopoly of Academic Publishers in the Digital Era. PLoS ONE 10(6): e0127502.
This content has been updated on December 15 2015 at 7 h 47 min.