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...Models of competition unit business organization labor part perfect and monopoly define what are also known as four conditions for many buyers sellers identical products informed free market entry exit is an example there perfectly competitive businesses barriers to start up costs how can technology be a barrier when do monopolies form advantages have in the united states most natural give patent industrial monopolostic oligarchy monopolistic explain firms few artificial slight control over price differentiated monopolistically nonprice types characteristics goods location sale service level advertising image oligopoly collusion fixing cartel power forms great little predatory pricing antitrust laws regulating practices breaking blocking mergers preserving incentives deregulation benefits...