Endogenous N as a function of$ω¯$alongside other key variables

The numerical settings for the plots in this figure are $A=0.3$⁠, $α=0.5$⁠, $δ=0.4$⁠, $W=1$⁠, $η0=0.03$⁠, $M(ω¯)=10+120ω¯$⁠, and $η1(ω¯)=1.1−ω¯$⁠. The top two panels plot P and $π$ against $ω¯$⁠, respectively, and the bottom two panels plot HHI and N against $ω¯$⁠, respectively.