Maybe rhyming metre would never be recreated. In some cultures it wasnt. The phase space for what will entertain humans is seemingly almost infinitely detailed, there is no wrong or right way to do it. Eg. people can dance to banging rocks together just as effectively as to Mozart.
On the other hand, there is only one Pythagoras' theorem, and an infinitude of similar incorrect theorems. We postulate that intelligent aliens should discover Pythagoras' theorem but not Jazz or De Stijl.
That's a very strange idea.
If all existing novels dissappeared do you think we would produce novels straight away?
If all painting dissappeared would we paint with perspective, or in abstract, or just go for rough cave type paintings?
How long would it take us to come up with rhyming metre, or the observational essay, cinema or stand-up?
You think we'd start from having no references and create this immediately?