There is a trade-off, though; they lose the working (read: paying) customers when the larcenous unassimilated “youths” show up...
They may believe that their regular profits will outweigh this.
Doesn’t really matter too much at this point - the classic all-indoor shopping mall is rapidly becoming a thing of the past, replaced by all-outdoor facilities - well, if it gets replaced with anything. Because of this sort of stupidity, people are increasingly just ordering online.