Some people also manage to extract millions of profit from Youtube and Instagram channels, despite all of the content being free. Books are not that different from any other medium.
[1]: https://gmkeros.wordpress.com/2011/09/02/terry-pratchett-and...
Honestly, I'd much prefer that model for books over the forced Adobe DRM or vendor-specific stores that the industry seems to be trending towards.
Expecting direct payment for any knowledge product experience is a poor idea to carry on to extremes like plays & skits. If today someone finds a lost manuscript by a great ancestor author then they own the copyrights to it the moment they publish it. But we wouldn't have the Iliad without mass copying. In a way our imprisoned OP is a perfect reciter of plays who is doing his bit to ensure the plays that do get made remain true to human spirit not deepening state tentacles.