Dante was a reniassiance PR spin doctor for the Catholic church. He wrote about hell as if he had been there, which of course he hadn't. It was all just his imagination.
That having been said the biggest mistake I perceive that people make about Satan is to think he is like a man. Interestingly this is the exact same mistake people make about God. I wonder why we humans love to make God and the natural forces so humanlike? Maybe we just don't know any better.
No one will ever take over hell because hell is a state of mind, not a place. Satan and God live within you, hell or heaven is in your own consciousness. This inner doorway within each of us is the narrow path, the gateway to eternity. You may not believe me now, but one day you will see it all very clearly. As the enlightened saint Yuz Aseph once said, "It isnt what goes into your mouth that pollutes a man, it is what comes out that does damage."
Conversations with Yuz Aseph