More like they are scared ordinary folks will hear of such studies.
Its well known the copyright maximalist media cartel have in the past been economical with the truth and in fact told blatant lies when it suits their purposes, I welcome all unbiased studies as they make clear the true reason the cartels are pretending they are losing cash, its because they are lazy selfish middlemen and in the modern era such anachronisms are likely to vanish and not too soon I say.