There are many examples of articles where the publisher does not own the copyright; any article written by US government scientists is not subject to copyright.

There are many examples of articles where the publisher does not own the copyright; any article written by US government scientists is not subject to copyright. Preprints are an excellent option, and every field should make distributing preprints at the standard servers (Arxiv, Biorxiv, etc.) the norm. The broad visibility from open preprint servers seems to be evolving into a different kind of peer review, to the extent that if, in my field, I see a published article with no arXiv preprint I wonder if the authors are trying to hide something.