To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries.
Not ‘to grant them greater control’ or even ownership. To secure exclusive right for a limited time. And this only because it was meant to promote science and art.
Using copyright to prevent a work from spreading is a direct perversion of the intent, it is using it in a manner diametrically opposed to what it is supposed to do.
Better to try to get them not to vote at all I think. Push that and it might convince them to go vote when they might possibly have been willing not to. And other offices are also very important.