@nemobis @ntnsndr Yeah, talk to cataloging librarians, and you'll hear some stories.
I don't know your criteria for co-ops (I haven't read all you've published on them) but I generally assume that a requirement for a true co-op is that members choose the governing officials, or at least a controlling share of them. That's not the case with OCLC. (There's a council chosen by libraries, but it's subordinate to the board of directors, where the majority of seats are *not* electable by council.)