This would encourage responsible drinking in responsible establishments and restore the community in rural areas. Keeping the current licensing laws would ensure pubs have a real duty to be responsible, as a punishment for encouraging excessive drinking could be that the prices go to normal levels.
It will also give people an option to the vertical drinking and supermarket led loss leaders which encourage binge drinking.
Currently there is no incentive to go to the local pub as costs are restrictive, It is cheaper to drink at home, to excess than to have a small social drink.
By keeping or even upping the prices of clusters of pubs, this would encourage community pubs to re establish themselves as a focal point for the local community