What is a "social demand"? By what method could we determine how much of a good is "socially demanded"?
Justice, for instance. Can one person be reliably counted upon to measure how much justice he or she has received? Probably not. But political processes do work out various means for delivering more or less justice. These means appear to have something to do with the demands of various people. The market analogy is of course not perfect.
Y'all know the rules: