There's [an article](https://www.sciencemag.org/news/2019/09/new-deals-could-help-scientific-societies-survive-open-access) out in The Times Higher Education Science Magazine (edit 11:38am) about Learned Societies and open access. As usual, it points out the thorny problem that Learned Societies derive revenue from subscriptions that they fear will be lost under an OA model. A few points spring to mind on this.