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They both have to deal with money and buying out.
An oligopoly is an intermediate market structure between the extremes of perfect competition and monopoly. Oligopoly firms might compete (noncooperative oligopoly) or cooperate (cooperative oligopoly) in the Marketplace.
Firms in oligopoly can set prices to a degree but must consider other firms' decisions.
perfectly competitive industry become a monopoly, what changes
perfectly competitive industry become a monopoly, what changes
An oligopoly is an intermediate market structure between the extremes of perfect competition and monopoly. Oligopoly firms might compete (noncooperative oligopoly) or cooperate (cooperative oligopoly) in the Marketplace.
The definition of monopoly is one firm in the marketplace selling a particular good. An oligopoly is when a small group of firms comprise the market for a particular good. In the real world, there may be several, or even many, smaller competitors to a monopoly or an oligopoly, but the monopolist or the oligopoly still controls the vast share of the market. For example, Standard Oil repeatedly drove new entrants out of the market before its breakup.
Monopoly means that there are no competitor for your product or servises
the difference between perfect and imperfect oligopoly
Oligopolies involve more than one company while monopolies involve only one. apex :]p
The difference between a monopoly market and a perfectly competitive market is that in a perfectly competitive market there are many sellers and buyers, the traded goods are homogeneous goods or the same goods and sellers are not free to set prices. whereas, a monopoly market is a market that has only one seller, so buyers have no other choice and sellers have a large influence on price changes.
B. interdependence: what one firm does in setting prices, determining production levels, investing in R&D, and so forth can significantly affect other firms competitive positions.