Sources of monopoly power A monopolist, unlike a competitive firm, has some market power. It can raise its price, within limits, without the quantity demanded falling to zero. The main way it retains its market power is through barriers to entry-that is, other companies cannot enter the market to create competition in that particular industry. Complete the following table by indicating which barrier to entry appropriately explains why a monopoly exists in each scenario. Barriers to Entry Exclusive Government- Created Ownership of Monopolies Economies a Key Resource of ScaleScenario: 1. You can find the mines for tanzanite (a blue-purple gemstone) only in Tanzania, but they are owned by the local government. Given that no one is allowed into the mines without government permission, the market structure for tanzanite highly resembles that of a monopoly. 2. In an Imaginary country, there is only one federaly licensed lotterlagency in any state: that is, it is impossible for any private firm to start up a competitive lottery without a government icense to do so.3. In the ehectricty industry, low average total costs are obtained only through large-scale production. In other words, the leitial cost of setting up all the necessary wiring makes it risky and, most tikehy, ungrofitable for competitors to enter the market.