Pepsico is an example of monopolistic competition, Microsoft belongs to an oligopoly, and an electric company is a natural monopoly.
Monopolistic competition: Pepsico is an example of this market structure where many firms offer differentiated products.
Oligopoly: Microsoft belongs to this market structure characterized by a few large firms dominating the market.
Natural monopoly: An electric company falls under this market structure where average total cost decreases with increased production.
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