From my just-published piece on the inequalities wrought by read-and-publish OA deals:

So there are lots of problems with read-and-publish. But the biggest one—the flaw that undermines the whole project—is the model’s doubling-down on global inequality. The practical effect of the agreements is to create an authorial underclass, a stratum of scholars who—thanks to geography or institutional affiliation—don’t get to publish OA. Membership in the underclass is, crucially, an expression of income.