Questions tagged [monopolistic-competition]

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1answer
91 views

Derive and Decompose The Aggregate Elasticity of Substitution in CES Economy

The paper is Oberfield & Raval 2021. Consumers have standard Dixit-Stiglitz preferences consuming the bundle $$Y= \left(\sum_{i \in I} D_{i}^{\frac{1}{\varepsilon}} Y_{i}^{\frac{\varepsilon-1}{\...
3
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1answer
68 views

The Price and Demand Index in Homothetic Kimball Utility

Suppose with Kimball preferences, utility $Q$ from consuming $\left\{q_{\omega}\right\}_{\omega \in \Omega}$ is implicitly given by $$\int_{\omega \in \Omega} Y\left(\frac{q_{\omega}}{Q}\right) d \...
2
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0answers
39 views

Elasticity of substitution of goods in canonical New Keynesian Model

In the context of a New Keynesian Model (NKM) with imperfect competition, the aggregate demand for good can be represented using Dixit-Stiglitz aggregator $$C_t=\Bigg(\sum^1_0C_t(i)^{\varepsilon-1\...
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1answer
59 views

demand curve shift in a monopolistic competitive market

As more firms enter the market, the quantity demanded at a given price level will thus decline. Therefore, the perceived demand curve for any individual firm will continue to shift leftward until the ...
3
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0answers
29 views

Does a monopolistically competitive market outcome involves assuming rational expectations?

E.g. When Grazzini et al. (2014) discuss a "monopolistically competitive outcome" (MC) in their paper ($2.1), which is based on Dixit-Stiglitz's model, 1977, does this outcome involve assuming ...
1
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1answer
29 views

What happens to consumer surplus and profits as firms get more information in Hotelling's duopoly model?

In the Duopoly on the line [0,1] with customers uniformly distributed, with firm A on the 0 side and firm B on 1's side, we know that if the firms have no information about the customer, there will be ...
0
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1answer
102 views

Derivation of aggregate demand function for Monopolistic Competition (based on Combes et. al, 2008)

A specialized question for those, who excel in monopolistic competition and modern trade theories. I am interested in a derivation of an aggregate demand function for a model of monopolistic ...
4
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0answers
54 views

Examples of Analysis of Competition in a Latent Product Characteristic Space

Competition between firms offering heterogenous products is often an exercise of constructing the right kind of spatial model. There is the famous Hotelling model and many other papers that model ...
4
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1answer
91 views

Concentration Measures

There are several metrics used to identify market power. Such as ... the 'n' concentration ratio (the proportion of overall sales given by the top n firms) and the Herfindhal index. However, there ...
0
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1answer
162 views

Have countries with a monopoly on a resource in an area ever established 1-company monopolies in that area to drive up price?

Say its the 18th century and South America wants tea. Britain, for example could have a monopoly on the tea trade in the area. However if multiple British companies sell in the area they will drive ...
1
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1answer
87 views

Constant MC - Monopolstic Competition

I would like to know if it is possible to have constant marginal costs (MC) in a business that is operating on a market, that is defined by monopolistic competition? The company is a construction ...
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2answers
13k views

Is the global Automobile Industry changing from an oligopoly to monopolistic competition?

The current situation is the automobile industry is an oligopoly as there are few big firms and massive barriers to entry due to cost. However, The industry seems like it is changing to a monopolist ...
1
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2answers
116 views

Free market defense against anti-competitive behavior?

One argument against a completely free market economy without "government" oversight is the tendency towards anti-competitive behavior. The argument is that government laws are needed to prevent anti-...
-1
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1answer
696 views

Monopoly and competitive output levels

Why do markets that are dominated by a single seller have a tendency to maximize profits at lower levels of output than their competitive counterpart? Why is the competitive market equilibrium price ...
3
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2answers
2k views

Are market structures on a spectrum?

So I understand that each market structure has their own characteristics, and that for instance Perfect Competition involves high competition, and I believe Monopolistic competition slightly less so, ...
2
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0answers
710 views

Cobb-Douglas production function with continuum of goods

I'm trying to derive the solution to a final producer with unit elasticity of substitution and a continuum of inputs (of measure $x$). She minimizes input costs, given an output of $q$. $$ \min_{\{y(...
0
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2answers
316 views

Would you consider airport parking to be a monopoly or a monopolistic market?

If you look at it one way and group the different companies that offer parking, it could be a monopoly as that is the only place you can park. On the other hand, the different companies offer ...
3
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1answer
343 views

Log-Linearizing a Dixit-Stiglitz function

In a New-Keynesian Model, the Consumption index $C_t=\left(\int_0^1{C_t(i)^{1-\gamma} \ di}\right)^{\frac{1}{1-\gamma}}$ is log-linearized to $\tilde{c_t}=\int_0^1{\tilde{c_t}(i) \ di}$ where ...
3
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1answer
1k views

Why does demand curve shift in, in a monopolistic competitive market?

In a monopolistic competitive market, demand curves shift in, if more firms enter the market. I can't seem to wrap my head around it. Demand remains the same, supply has increased. Shouldn't entry of ...
1
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2answers
118 views

Market behavior when consumer must choose product before knowing price?

What forces influence the price in a market, wherein the consumer must choose a good before knowing the price, and afterwards only knows the price of the good purchased, not that of any competing ...
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2answers
136 views

In which market structure does the consumer has almost zero knowledge about the good?

Consider goods that are almost identical (e.g. cement) and require technical knowledge to understand their merit, which an ordinary consumer might not possess. What then is the feature characteristic ...
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0answers
80 views

A high store loyalty indicates what kind of competition among cement retailers selling products of the same brand?

To provide some context, this question occurred to me while I was considering the cement retail market. If one considers retailers selling cement of only one brand, then the concept of brand loyalty ...
1
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1answer
59 views

Will there be any competition amongst cement retailers?

If we consider a cement manufaturer in a given country, say India, then will the cement retailers of that companies' product compete with each other? And if so, then what kind of a competition will it ...
2
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0answers
233 views

What are some ways to add quality to the supply-demand model?

Please excuse me, I hardly know anything about economics yet. When the quality of a product changes, the demand curve moves. But what if there are different versions of a product, of varying ...