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Due the fact that oligopolies control a large share of the market, they are known as 'price setters'   \subsection{Asymmetric Information}  To understand the concept of a singularity, the idea of spacetime must be considered. Spacetime exists as a four dimensional concept, with three of the dimensions being spacial, and the fourth being a measure of time \cite{Hawking_2001}. It is therefore possible to plot any event on a spacetime diagram with a set of cartesian coordinates. Tidal gravity is a manifestation of the curvature of this spacetime due to any object that has a mass \cite{Thorne_1994}. If this concept is applied to a singularity with infinite density, and therefore infinite mass, then the curvature of spacetime at this point must also be infinite. It is this huge gravitational force that means not even light can escape from a point beyond a black holes event horizon.  \subsection{Consumer Choice}  The physical properties of a black hole are well defined by what is known as the 'No Hair' theorem. This states that black holes can be described by only three observable external properties: their charge, mass, and angular momentum \cite{Hawking_1998}. Furthermore, it is possible to calculate the Schwarzschild radius of a black hole. This was first formulated by Karl Schwarzschild in 1916 and determines the radius below which any object will collapse to form a singularity. This is possible using the equation of:\\*\\*  \subsection{Ownership of the Market- State or Private Private}