One of the hallmarks of competitive interaction is each firm’s desire to differentiate from rivals. Although differentiation may be achieved through product related choices, advertising levels may constitute another key mechanism. In this paper, we examine under what conditions firms will...

In this paper, we ask when will a firm earn more profits from selling the attention of its customers to advertisers than from selling the underlying product itself. In other words, when will a firm become an advertising "medium"? We investigate this decision as a function of the intensity and...