Die Zeit has an article, in
German, with scholars complaining that Heidegger's family controls his texts,
39 years after his death. This didn't used to be a problem. The root-fault here are
the governments that have passed laws extending copyright to 90 years after the death of an
author. Of course his family is looking to maximize the profit their brand. They're acting in their own best interests.
Although a few
scholars are in the vanguard, wanting culture to be disseminated, wanting their work to be read and criticized, so they can hone their arguments and improve our understanding, the majority are quite happy to have their works hidden behind copyright laws.