the Scholarly Kitchen blog has published an interview between Karin Wulf and Margot Finn of the Royal Historical Scociety, which as recently issued a paper on "Plan S and the History Journal Landscape."
Below is an excerpt from their disucssion:
"The three main impediments in the UK are cost, disciplinary structure and publishing infrastructure. At most 20% of research in UK Humanities is funded by the types of external grants that cover article processing charges (APCs) and book processing charges (BPCs). That is a sharp contrast to many STEM subjects, where OA costs can be carried by an external funder, rather than an individual researcher. (Of course, that cost-carrying is not in itself unproblematic). The fact that many historians who publish in journals are employed outside the university sector (for example, in archives, cultural organizations and museums) or are not employed at all, is not unique to our discipline, but such ‘citizen science’ does not fit very comfortably in current OA funding models. Nor is there a robust OA publishing infrastructure that can deliver the required volume of publication at an affordable cost. "