Now that copyrights can be just about a century long, the inability to know what is protected and what is not protected becomes a huge and obvious burden on the creative process. ↗
The Cistercians do not eat meat... Yet they keep pigs to the number of many thousands, and sell the bacon - though perhaps not quite all of it. The heads, legs, and feet they neither give away, throw away, nor sell. What becomes of them God knows. ↗