Im wondering how the already preserved and publicly available film content is being considered being made freed ? Theres very clear information on rights, repro

Im wondering how the already preserved and publicly available film content is being considered being made freed ? Theres very clear information on rights, reproduction restrictions, and the preservation efforts that have already been made here: https://www.archives.gov/research/order/film-sound-video-dc.html https://www.archives.gov/research/order/film-sound-video-dc....