Open Access has a precise definition: https://openaccess.mpg.de/Berlin-Declaration https://openaccess.mpg.de/Berlin-Declaration Publishers do misuse the conce

Open Access has a precise definition: https://openaccess.mpg.de/Berlin-Declaration https://openaccess.mpg.de/Berlin-Declaration Publishers do misuse the concept though. They try to stay clear of using the term when they do. They use terms like Free Access or some of the more dubious colour variants of OA that doesn't provide all the freedoms that the Berlin Declaration of OA defines. Interestingly articles uploaded to arXiv with the arXiv.org perpetual non-exclusive license are not OA as the reader is not allowed to redistribute the paper.