ABSTRACT
Economists disagree today on the elaboration of an adequate analysis of the markets which emerged with the development of the “new economy” (NE). Two main interpretations, however, seem to prevail.
According to a first view, the usual tools of marginal analysis continue to fit for the study of the new realities which have to be considered and coped with. This does not mean that the traditional theory of pure competition in a private good economy provides the best analytical framework. The NE would imply the necessity of abandoning this theory and of replacing it with the so-called “new microeconomics.” This view has been developed by various authors even if they do not always agree on the specific tools which are the most relevant to cope with markets in the NE.
