Prior to the invention of copyright, it was not very cheap or easy to make a faithful copy of something. Books had to be type set by hand, before the printing p

Prior to the invention of copyright, it was not very cheap or easy to make a faithful copy of something. Books had to be type set by hand, before the printing press they had to be copied by hand. Photography of good enough quality to reproduce a painting is very very recent. So is ability to record a play well enough to enjoy it like you are there later.