Not always. Say that an artist posts their art to Deviantart, and another user rips it off, erases the watermark, and uploads it to Reddit. No money changing h

Not always. Say that an artist posts their art to Deviantart, and another user rips it off, erases the watermark, and uploads it to Reddit. No money changing hands, but the artist still has the legal right to remove the copy and/or be properly attributed.