NOTE re PLAYBILLS: I don't know the current practice on Broadway, but any theater where I've ever worked has had people (usually ushers) pick up good-condition programs off the floor after the show. These are then returned to the rack to be handed out at future performances.
These "formerly owned" programs are factored into the count of programs printed for the run of the show. Where this practice exists (again, not sure about Broadway), whether you pick them off the floor or take them from the rack, it amounts to the same theft from whoever pays for the programs.
No, this doesn't keep me awake at night.