We can say the same for legal ways to experience a work in a way that is not fair use. It’s been pretty well proven that livestreamers streaming certain story-based and movie-like video games has eaten into their sales figures. But game studios have informal and formal agreements allowing content creators to do this. Some copyright laws are a mess, but not all of them.

As for the leftism, I appreciate it in concept, but we do live under capitalism and I don’t mind artists getting paid by holding their own copyrights. Problems usually occur when those rights are bought by capital. Also many artists depend on working under a more free and loose sharing system, like many who make webcomics or fan art. And that’s possible too. And those artists can make art with or without the full rights withheld.