Rivalry under price and quantity uncertainty

The paper shows that the degree of correlation between unit profits and market volume might result in different value functions and triggers, especially for followers and simultaneous investors in non-pre-emptive games. Monopoly-like volume is a critical determinant of the leader's trigger in both pre-emptive and non-pre-emptive games. First-mover advantages are significant in the definition of the leader's optimal entry moment, if the players are fighting for the leader's position (pre-emptive game).