Although this is a form of an argument that Plato does put forward in other dialogues as well, and so it strikes me so there's at least some reason to think this is an argument that he felt might well be right.
Michael Sandel, a political philosopher from Harvard, has putforwardanargument that some things are just too important to be commodified through market relations.
But the final appeals court supported anargumentputforward by Mr Berlusconi's lawyers that there may be a constitutional flaw in the reformed penal code.