No, it would just become a meaningless decorative light if it's on all the time and customers would pay no attention at all.
It's like the misguided Prop 65 signs that are in practically every commercial building in California so instead of warning people about dangerous levels of hazardous chemicals, they get a meaningless sign in every building for hazards that are no worse than if they were walking down the street or sitting at home.
It's like the misguided Prop 65 signs that are in practically every commercial building in California so instead of warning people about dangerous levels of hazardous chemicals, they get a meaningless sign in every building for hazards that are no worse than if they were walking down the street or sitting at home.