I speak carelessly, of course. What I probably should have said was that when supply goes down people have to buy less, otherwise the amrket does not clear properly. But I think we can both agree, the point of raising prices is to lower demand, and that lowering demand is a good thing when there isn’t enough gas to go around.
It would be better in the interest of morality (and customer satisfaction) to raise prices just a smidge (and give a big suggestion to customers by selling a maximum of 5 gallons at a time, if there is a run).