So literally every doodle you make and anything you write must be available for purchase? Because you have a copyright on ALL that stuff. Copyrights are automatic.
Your diary? Copyrighted.
Your margin scribbles while you're on the phone? Copyrighted.
That furry midget hentai that you draw for your own "entertainment"? Well, you get the point.
Granted, the copyright system is fucked, but some of the rules exist for good reason, and forcing everyone to release their copyrights if they won't sell their art is ridiculous. I will certainly agree that the copyright/trademark systems badly need an overhaul.