Before revision:  In this model, there are two firms competing on two markets with one firm having a monopoly on one market. Bulow et al. describe the counterintuitive example of a positive price shock in the firm's monopoly market resulting in a reduction of the firm's equilibrium profit.
After revision:  They describe the counterintuitive example of a positive price shock in the firm's monopoly market resulting in a reduction of the firm's equilibrium profit.