I am merely indicating that in cases where the author died many years ago, all the extension of copyright does is allow non-creative people that were once attached to people that were attached to the original author (great-great grandchildren, the men who now control the publishers (very unlikely to be the same men that controlled the publisher back when these works were published in the 50s)) to profit exclusively off of the author's work, which is the very antithesis of a motivation to produce your own creative work. The creative originator long since got all imaginable value out of the work and now the copyright is merely a memorial to society's worship of money over all else.