More mooring balls is not a practical business solution...and my prior point was that the boatyballs were empty all night, not just until someone showed up (i.e. boatyball hole). Given excess supply, FCFS are preferred over BB and the BB owners at a disadvantage relative to the other suppliers of FCFS balls in the field. So BB hurts the maximization of revenue in less than full fields relative to your other players in that field ceteris parabus.