As a parallel example, there are states in America where the only off-licences (liquor stores) permitted to operate are the state run monopoly. My understandin

As a parallel example, there are states in America where the only off-licences (liquor stores) permitted to operate are the state run monopoly. My understanding of the reasoning behind this is centred around morality, although I imagine there's also a financial incentive for the state to maintain this control.