ECON11026 Economics: Imperfect Competitive Market Structures

Introduction

The aim of this study is to analyze on the firms behavior under the imperfect competitive market structures. In addition, market failure and imposition of government policy for controlling the market is also illustrated in this paper. This study also discusses about the Australian circular flow of income and various determination of GDP growth rate. The circular flow of income helps in assessing the respective nation in terms of national income and product account (NIPA). Moreover, the GDP, withdrawals and injections are also estimated from the national accounts data for the hypothetical economy.

1.

The restaurants in the monopolistic competitive market offer different food items to the customers that possess some unique element within it (Friedman, 2017). On the other hand, cell phones Company in the oligopolistic market such as Apple, Nokia differentiate their mobiles in terms quality, innovative features and design. This strategy helps the firms in existing in the competitive environment and expands their business globally.

b)i) The framework of kinked demand curve assumes that  the company’s will face commodities dual demand curve based on rivalries reactions to the price change or other variable. The demand curve of the oligopolistic competitive market according to the hypothesis of kinked demand curve has ‘kink’ given the certain price level. The kink occurs at that price level  prevailing in the market because the demand curve segment above that present price level is elastic in nature while the demand curve section below prevailing price is highly inelastic (Tinkler and Woods, 2013). In this case, the kink occurs at price $185 corresponding to the quantity demanded at 50. At product price above $185 and amount less than 50, the demand curve becomes elastic. However if the firm increases the product price, its rivalries will not change the price and its quantity will decline. At prices below $185, demand curve becomes inelastic. This is because if one entity declines its product price, others will also tend to decline their commodities price.

ii) Marginal revenue (MR) curve corresponding to this kinked demand curve consists of three segments. If the quantities are less than 50, the MR curve is moderately flat. This section is obtained from that segment of demand curve that is elastic that corresponds to higher price and lower quantities (Taussig, 2013). On the contrary, if the product quantities are higher than 50, the MR curve is steep. This section is attained from the demand curve portion that is inelastic associated with higher quantities and lower product prices. In addition, the MR curve becomes vertical at current price$185. Hence, this vertical section of the MR curve corresponds to kinked point of demand curve.

Graph 1: MR curve

Source: (Authors creation)

iii) Maximization of profit is attained at the point where marginal revenue (MR) curve becomes equivalent to marginal cost (MC) curve. The MC curve cuts the vertical portion of the MR curve  that corresponds to the equilibrium price $185 and equilibrium quantity 50.

Graph 2: Profit maximizing point

Source: (Authors creation)

2.

a. Market failure occurs when the products are not allocated in efficient way. Externality is one of the main causes of market failure, as equilibrium price does not reflect actual cost and advantage of commodities. Externalities also known as external cost exists in the market when prevailing price does not detain social cost that is being inflicted in the society (Sloman et al., 2013). Therefore, divergence arises between both private and social interest that leads to market failure. Externalities in relation with environmental resources are substantial due to indirect cost that individuals inflict on the society. For example, market failure occurs owing to external cost of coal-fired power station. In the current situation, few users demand coal for their private advantage and private cost. Moreover, demand for coal fired energy increases if its price fails to detain external cost that has been obtained by the society namely environmental effects. In addition, if the coal’s or energy’s market price is unable to capture social cost, indirect users face incentives.

External cost of alcohol consumption means the spillover cost that affects the individuals owing to consumption of alcohol. Alcohol has been considered as demerit product and hence overconsumption of alcohol leads to negative externality. However, market failure occurs as all  cost are not considered by the consumer and this results to spill-over cost. This spill-over cost affects other persons that declining societies benefit. This is illustrated with the help of the diagram given below:

Graph 3: Market failure in the context of alcohol consumption

Source: (Authors creation)

The figure reflects that  the consumer considers their benefit and hence consumes at Qm at price Pm where marginal cost is equivalent to marginal benefit (MC=MB). The spillover cost is shown by lower MSB curve. Efficiency loss as consumption occurs at the point where MSB<MC and thus resulting to deadweight loss.

b)

i) An increase in excise tax on petrol helps in recovering the cost that has been inflicted on the society by the road users. It is known as proxy cost for externalities as it aids in decreasing congestion in the roads of Australia. One disadvantage of the imposition of excise tax is that the amount paid by the user does not differ directly with social cost of using road.

ii) Bus and cycle lanes at peak times helps in reducing crashes and offers uninterrupted way for the public transport and hence makes travel safer. One disadvantage is that it restricts to peak hours as it cannot be designed easily for shifting utilization.

iii) Prepaid smart card as used in Singapore helps in reducing congestion as it takes less time  for the driver to estimate the amount to pay the charge when the vehicle moves under ERP (Electronic Road Pricing ) gantry. One drawback of using this smart card is that it is expensive and creates risk to the users of fake cards.

3.

iii) It is considered as net injections as rise in government spending is not counterbalance by any changes. However, more money is being printed in order to finance the investment if the government runs s budget deficit.

iv) Australian investors earning higher dividends on overseas investment is considered as decline in net withdrawals (Marshall, 2015). Overseas investment helps in diversifying  their portfolio and add benefits of higher economic growth.  Therefore, net outflow of money reduces abroad from domestic sectors.

b) i) GDP refers to the final commodities and services that are produced within the geographical boundary in particular time limit. The expenditure method estimates GDP as –

GDP= Private consumption+ investment (government + gross) + government expenditure on consumption +net exports (Import – Export)

From the above table, GDP is calculated as –

ii)Withdrawals

iii)Injections

4.

Graph 4: Inflationary gap

Source: (Authors creation)

ii) Deflationary gap refers to the difference between the outputs at full employment level and the original output (Bauer, 2014). It is defined as the measurement of aggregate demand deficiency at full employment level. This gap is affected by the economic growth rate in comparison with the growth rate trend in the long run. It is also termed as recessionary gap. The diagram below reflects deflationary gap-

Graph 1: Deflationary Gap

Source: (Authors creation)

The difference between the inflationary and deflationary gap is that inflationary gap occurs when aggregate demand is higher than the aggregate supply (AD>AS) while deflationary gap arises when aggregate demand becomes less than aggregate supply (AD<AS) at full employment output level (Antal and Van den, 2013). Equilibrium national income level is determined when aggregate demand becomes equivalent to aggregate supply. However, full employment equilibrium in the economy occurs when the AD and AS are equal and all resources are employed fully.

b) i) If a large proportion of peoples incomes is saved , then the comsumers spending automatically decreases. In addition, changes in interest rate implemented by the central bank of the respective countries influences the consumer’s expenditure habits. This affects the economic growth of the nation as consumers expenditure makes up near about 70% of the nation. However, if the purchasers stops spending , then the it adversely affects the national income of the country. The overall productivity reduces and this impacts on the GDP growth of the economy.

ii) Australia has been considered as the open economy and hence variation in GDP growth rate occurs due to volumes of export as well as import of goods. if the exports increases and import decreases, net export increases ( and Quéré, 2016). As a result, share of consumer expenditure decreases while expenditure share on purchases of government increases. As a result, consumers spending in Australia reduces as exports increases.

Conclusion

From the above assignment, it can be concluded that behavior of both the consumer as well as producer changes depending on the market structure. Implementation of government policy helps in controlling the market in case of market failure. The nations circular flow diagram aids in depicting the income flow on the country. In addition, increase in consumer income and rise in exports also effects on the overall expenditure.

References

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