Schuster Peter (Ordinarius Professor for Physical Chemistry) talks about open access

Open Access is the contemporary response to the tremendously increasing number of scholars and scholarly journals. Electronic media provide opportunities for the individual researchers for archiving an excessive amount of scientific literature. Hence traditional libraries will become obsolete in the near future, at least in natural sciences. This shift in everyday practical archiving of knowledge from the scientific community to the individual researcher and the need to quickly access content also requires new business models for the publishing industry.