Keep reading after that line. They're talking about the total number of out-of-circulation copies of a book in all closed US public libraries, not the ones they

Keep reading after that line. They're talking about the total number of out-of-circulation copies of a book in all closed US public libraries, not the ones they have the explicit right to use. And earlier they say the emergency library temporarily lifted the 1 to 1 ratio controls, which is openly admitting they did.