In Parts I and II we have discussed utilitarianism and the various kinds of deontological ethics (duty, rights and justice). Although these theories apply different criteria to judge the value of market institutions, there are important similarities. In particular, in utilitarianism, duty ethics, rights ethics and (some forms) of the ethics of justice, the autonomy of the individual is an important cornerstone for the evaluative analysis. In this chapter, we characterize liberalism and communitarianism as overarching philosophical approaches of the ethical standards discussed in Parts I and II and Part III, respectively. Then we describe an intermediate position, the so-called I & we paradigm.