Owners and operators of shopping malls and movie theaters will lose revenue if the recent trend towards mass shootings within these venues continues. Operators of such businesses will see increased customer traffic when they can offer "Secure Facilities" rather than today's unprotected locations. There is no legitimate reason for a person to carry a weapon while shopping or watching a movie. If an individual had a choice of two Malls with one protected and one not, in all probability they would shop at the protected Mall.
In the US alone there are 4,900 movie theaters and over 18,000 shopping centers and malls over 100,000 ft.² in size. As of 2011, the number of shopping centers and square footage had grown by more than 20% since the year 2000.