I strongly urge people to read Thomas Babington Macaulay's speeches on copyright, its aims, terms, and hazards. Very well reasoned and explained.
In particular, people often cited the case of authors who had died leaving a family in destitution, and claimed that copyright extension would be a fair way of preventing this, but in most cases the remaining family had never held the copyright; the author had initally sold the reproduction rights to a publisher who had then sat on the work without publishing it. The author, driven into penury, was then induced to sell the copyright to the publisher outright for a pittance. So in such cases a copyright extension only benefited the publisher, and indeed increased their incentive to extort the copyright.
In particular, people often cited the case of authors who had died leaving a family in destitution, and claimed that copyright extension would be a fair way of preventing this, but in most cases the remaining family had never held the copyright; the author had initally sold the reproduction rights to a publisher who had then sat on the work without publishing it. The author, driven into penury, was then induced to sell the copyright to the publisher outright for a pittance. So in such cases a copyright extension only benefited the publisher, and indeed increased their incentive to extort the copyright.