Modified_Entry_Deterrence_Game.tex

\begin{figure}[H]
    \centering
    \begin{tikzpicture}[scale=1.5]
        \draw[thick] (0,0) -- (1,-1.753) node[pos=.5,right] {\color{red}\textit{In}};
        \draw[thick] (0,0) -- (-1,-1.753) node[pos=.5,left] {\color{red}\textit{Out}};
        \draw[thick] (1,-1.753) -- (2,-2-1.753) node[pos=.5,right] {\color{red}\textit{A}};
        \draw[thick] (1,-1.753) -- (0,-2-1.753) node[pos=.5,left] {\color{red}\textit{F}};
        \draw[thick] (0,-2-1.753) -- (-0.5,-3.5-1.753) node[pos=.5,left] {\color{blue}\textit{F}};
        \draw[thick] (0,-2-1.753) -- (0.5,-3.5-1.753) node[pos=.5,right] {\color{blue}\textit{A}};
        \draw[thick] (2,-2-1.753) -- (1.5,-3.5-1.753) node[pos=.5,left] {\color{blue}\textit{F}};
        \draw[thick] (2,-2-1.753) -- (2.5,-3.5-1.753) node[pos=.5,right] {\color{blue}\textit{A}};
        \draw[fill=white, thick] (0,0) circle[radius=2pt];
        \node[above=0.1cm] at (0,0) {\color{red}Firm $E$};
        \fill (1,-1.753) circle (2pt) node[right=0.1cm] {\color{red}Firm $E$};
        \fill (-1,-1.76) circle (2pt) node[below=0.1cm] {$\begin{pmatrix} 0 \\ 2 \end{pmatrix}$};
        \draw[densely dotted, thick] (1,-2-1.76) ellipse (1.5cm and 0.5cm);
        \node at (1,-2-1.76) {\color{blue}Firm $I$};
        \fill (0,-2-1.76) circle (2pt);
        \fill (2,-2-1.76) circle (2pt);
        \fill (-0.5,-3.5-1.753) circle (2pt) node[below=0.1cm] {$\begin{pmatrix} -3 \\ -1 \end{pmatrix}$};
        \fill (0.5,-3.5-1.753) circle (2pt) node[below=0.1cm] {$\begin{pmatrix} 1 \\ -2 \end{pmatrix}$};
        \fill (1.5,-3.5-1.753) circle (2pt) node[below=0.1cm] {$\begin{pmatrix} -2 \\ -1 \end{pmatrix}$};
        \fill (2.5,-3.5-1.753) circle (2pt) node[below=0.1cm] {$\begin{pmatrix} 3 \\ 1 \end{pmatrix}$};
    \end{tikzpicture}
\end{figure}