You'd have to believe that this is not a problem for them or they would do that. By for them I mean the amount of issues with people taking the wrong baggage an

You'd have to believe that this is not a problem for them or they would do that. By for them I mean the amount of issues with people taking the wrong baggage and even having to compensate the owners of the baggage does not outweigh the cost and inconvenience to all the others having a ticket checked. Similarly it is fairly easy to walk into a dry cleaner without a ticket and pick up something that someone else owns that could be valuable. As long as you look and quack like a duck.