You do realize that not every design was created to sell, a lot of design is for a specific "one time" use.
So an artist creates something for a one time use.... Not to sell to anyone?? AND then he or she posts, at the very least, a 2k-3k pixel jpeg image of the artwork on a blank background online WITHOUT a watermark so that you or I could admire their work and if not buy that piece, at least commission another??
I know a lot of you are artists, please show me where you have ever done this