Copyright laws have a fair use exception, which is a complicated matter, but, suffice it to say, that if I post a photo of cd I’m listening to, that falls within the fair use exception. If I’m doing it for profit, no.
Fair use doctrine, https://copyrightalliance.org/faqs/what-is-fair-use/#:~:text=Fair use permits a party,be considered as fair use.
I want to go back to the Bob Blumenthal discussion for a second. He probably writes his notes as a “work for hire,” which means that Mosaic owns the right to his notes.