Sometimes they do, sometimes they don’t. I think most people want credit for the original ideas and effort they put in, even for something like fanfiction. And

Sometimes they do, sometimes they don’t. I think most people want credit for the original ideas and effort they put in, even for something like fanfiction. And fanfic is already legally very gray! Street artists in NYC selling copies of copyrighted work aren’t there to be creative, of course. But they’re also definitely breaking copyright law.