Currently, there are plenty of options to publish an open-access paper. From using purely open-access journals (free of charge or for a fee) to opting-in for an open-access license in the traditional journal (usually for a fee). However, I am not sure about efforts/options to make already existing papers open-access by means of re-licensing or double-licensing.
Typical use case:
- A researcher has some papers published in a traditional journal which some time ago became hybrid open-access. Thus, new publications have an option to be published in an open-access fashion.
- The researcher has the funds (source is not important) and the will to make some of their already published contributions open-access.
- Currently, the best existing option to make the publication more accessible (not open-access!) is via self-archiving, depending on the policies of the particular journal\publisher. This is a great option, but certainly not an ideal one.
I am not aware of such options existing for any major journals\publishers that I have papers published in. Do they actually exist? Is there something that prevents publishers from offering open-accessification of existing articles? Are there more materials and established point-of-view on this topic that I was not able to find?