Delta’s CEO called for a national no fly list for unruly behavior, act poorly on one airline be unable to fly any airline. Highly problematic, with no standards for being placed on that list (each airline applies its own!) or opportunity for judicial review. That didn’t go anywhere though it’s something the Biden administration toyed with.
Now Dutch airlines KLM and Transavia want this as an international system, and will begin by sharing unruly passenger behavior which each other.