It is suggested here that there are many highly diﬀerent purposes for the study and application of theories of oligopolistic competition, monopolistic competition, and allied topics. This paper sets the diﬀerent purposes and questions in context, then makes criticisms and suggestions as to where to go from here.
Shubik, Martin, "The Many Approaches to the Study of Monopolistic Competition" (1984). Cowles Foundation Discussion Papers. 950.