If it is open to everyone, then the elite want to snub it. God's open door is not attractive if even a fool can go through. So, the tragic elite still bang themselves mercilessly against man-made ceilings determined to find a more exclusive way to freedom. The Colossians also reasoned that bad stuff happened because of unseen forces of darkness. They were afraid, so they sought the supernatural.
People still do.
Paul says nothing can relieve man's fear, except grace through Christ, because only Christ has power over man's ultimate fear - death. Human nature does not seem to have changed much over the centuries. We are like that bird, fighting to make our own way to freedom with wit and will. We struggle to escape what binds and hurts us until we are battered and exhausted, when the door to triumphant living and life beyond mortality is open all the time. All we need to do is accept grace.