Why do commercial buildings in big cities keep the lights on during the night?

Commercial buildings in big cities often keep their lights on at night for several reasons, including security and safety, as illuminated spaces deter criminal activity and help ensure the safety of employees and visitors. Additionally, it helps maintain visibility for nearby streets and pedestrians. Some businesses may also keep lights on to create a vibrant urban atmosphere or to signal that they are open for late-night services. Finally, energy efficiency measures and smart lighting systems can minimize costs while still providing necessary illumination.