Planet Money had an episode on this The Eddie Murphy rule/what happens at the end of Trading Places https://www.npr.org/templates/transcript/transcript.php?st

Planet Money had an episode on this The Eddie Murphy rule/what happens at the end of Trading Places https://www.npr.org/templates/transcript/transcript.php?storyId=200401407 https://www.npr.org/templates/transcript/transcript.php?stor... as well as on the onion King (https://www.npr.org/templates/transcript/transcript.php?storyId=448718171 https://www.npr.org/templates/transcript/transcript.php?stor...) which I assume is where op found out about this story.