You could copy a book, and sell it. This was a big part of the Protestant revolution; the Catholic church didn't want the common people reading the Bible, but back then they had no legal way to control how people used the printing press.
Reviewing this a bit more, it was actually the 1710 Statute of Anne in Great Britain that took away our rights to copy whatever we wanted. https://en.wikipedia.org/wiki/Statute_of_Anne
That all went away in 1790 when the U.S. government passed the first Copyright Act. https://www.copyright.gov/timeline/timeline_18th_century.htm...