A discourse of 'fairness' has emerged in open-access circles in recent years. It has come from a sense that big, for-profit publishers have not played 'fairly' with libraries over the past 30 years. It is unsurprising. These large publishers make margins of 35%+ on billions of dollars of revenue, even while library budgets stagnate.
Martin Paul Eve (Fri,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: