And I should mention YouTubers wouldn't be making that much money if YouTube weren't enforcing copyright, as you could just upload their videos and get the ad money. Without copyright, you could also cut off their in-video promotions and add your own, including your own Patreon - so you would get 100% of the money off their work if you can out-promote them.
It's only live performances which are protected by the physical world's strict no-copying laws (the ones that don't allow the same macro object to be in two places at the same time).
So basically, no medium which allows copying of the works in whole or nearly whole has been successfully run with public works.