As someone who’s not too familiar with the bureaucracy of academia I have to ask: Can’t the authors just upload all their studies to ResearchGate or some other website if they want? I know that they often share it privately with others when they request a paper, so can they post it publicly too?
Publishing comes with IP laws and copyright. For example, open access articles should be easy to upload without concern. “Private” articles being republished somewhere without license is “piracy”, and ResearchGate did get in trouble for it. It’s complicated. https://www.chemistryworld.com/news/publishers-settle-copyright-infringement-lawsuit-with-researchgate/4018095.article
Pre-prints are a different story.