Here in Ontario we've had a law for a few years now that tobacco products can't be on open display. Cigarette packages behind the counter have to be behind an opaque door of some kind. Even high-end tobacco, like fine cigars, isn't allowed to be visible to customers to inspect before buying - all the places that sell cigars had to black out the windows on their humidors.
Prevously, the government had tried to legislate plain, neutral packaging for all cigarettes so they were all a uniform shade of grey (apart from the full-colour photos of diseased lungs and mouth cancer, of course). This did not come to pass. The rationale behind either law, however irrational, seems to be that if you can't see the bright shiny packages, you won't be enticed to buy smokes.
Given that someone ahead of me in line at a certain Mac's convenience store invariably buys a pack of cigarettes, I have to question the efficacy. I'm not convinced that diehard smokers care much which company they get their nicotine from.