exactly! we may not have had the musical, but we would still have the book... and even access to several audio books... while i like the musical, our family first read the book... and my kids have listened to different audio versions of the book because they like the story that much... by the time they saw the movie last week, they knew the story inside out...
And if it wasn’t for public domain works, we wouldn’t have countless adaptations and reinterpretations.
Something Hollywood billionaires refuse to acknowledge with their bought and paid for never-ending-copyrights.