AI companies are burning books, advocates complain to FTC

"What the public record does not establish – and cannot, from the outside – is how often the destroyed physical books are the last or among the last surviving copies of a given work."

I'd argue that it's not "how often" - the frequency would be within floating point error. But even one destruction of a last (even one of several) copy of a now dysfunctional publisher is a preventable cultural catastrophe.