Here's a big problem with that illustration: Jehovah hasn't allowed Satan to run the world. He's constantly interferring, had His people commit genocide on Satan's, refuses to let people use magic or any demonic influence (even though He constantly employed miracles and angelic influence), tower of Babel, etc.
It's like the teacher starts erasing the chalkboard anytime the student starts being creative. He's not letting the student fail, He's making him fail.