Other relevant articles and blogs:

The Transition to Open Access

The Transition to Open Access: The State of the Market, Offsetting Deals, and a Demonstrated Model for Fair Open Access with the Open Library of Humanities
PUBLISHED in 2017 bij Martin Paul Eve, Saskia C.J. de Vries and Johan Rooryck in ‘Expanding Perspectives on Open Science: Communities, Cultures and Diversity in Concepts and Practices Proceedings of the 21st International Conference on Electronic Publishing’ page 118. Edited by Leslie Chan and Fernando Loizides.