See also the story of TropeTrainer: essential software for learning Torah chants, which suddenly disappeared when its only author died and his widower wasn't prepared to continue selling it.
there’s a lot of talk about how broken the open source ecosystem is right now given how important they are to, like, keeping society running— a lot of those same needs and hurdles exist with abandonware, with the added risk of legal censure. we really need to figure out a way to make computers like. actually work