A similar behavior happens in the game ROM dumping community, owners of very rare or sometimes unique arcade boards often refuse to release ROM dumps, or do so

A similar behavior happens in the game ROM dumping community, owners of very rare or sometimes unique arcade boards often refuse to release ROM dumps, or do so only in a small group of individuals. They would lose nothing if they released it but I guess they take pleasure in knowing they have the exclusivity of a specific thing in the World.