| Course | DBA-8020 Seminar in Economics and Finance Models and Matrices of Sustainability |
|---|---|
| Module | Module 3 |
| Paper type | Module 3 written assignment: firm and market structure |
| Length | About 508 words, 4 pages |
| Format | APA 7 student paper |
| School | Thomas Edison State University |
| Program | Doctor of Business Administration |
| Updated | October 2026 |
Free sample paper for DBA 8020 Module 3
Seventy-Five Percent in Four Hands: Market Structure and a Small Entrant's Route Around It
Student Name
Doctor of Business Administration, Thomas Edison State University
DBA-8020: Seminar in Economics and Finance: Models and Matrices of Sustainability
Mentor Name
Month Day, Year
Seventy-Five Percent in Four Hands: Market Structure and a Small Entrant's Route Around It
The Spectrum of Market Structures
Saros (2020) describes market structures along a spectrum from perfect competition, with many small firms selling identical products, through monopolistic competition and oligopoly to monopoly. Structure matters because it shapes pricing power, the strategies firms use and the returns they earn, and the textbook's pluralistic approach adds critiques of how well the competitive model fits real industries.
Measuring Concentration
Using our market research estimates of retail sales shares for household surface cleaners:
The four-firm concentration ratio is 75 percent. Squaring and adding the shares gives a Herfindahl-Hirschman Index of 784 + 484 + 225 + 100 + 25 = 1,618. Federal merger guidelines (U.S. Department of Justice & Federal Trade Commission, 2023) treat markets with an index above 1,800 as highly concentrated; at 1,618, this market is concentrated but below that threshold, consistent with an oligopoly in which a few large firms set the tone and many small brands compete at the edges.
| Firm | Share |
|---|---|
| Firm A | 28 percent |
| Firm B | 22 percent |
| Firm C | 15 percent |
| Firm D | 10 percent |
| About 25 smaller firms | 25 percent combined, roughly 1 percent each |
Barriers to Entry
Bain (1956) identified barriers that let incumbents earn profits without attracting entry, including economies of scale, product differentiation through advertising and absolute cost advantages. All three appear here. Large firms spread national advertising across many products; their brands are familiar; and they hold relationships with supermarket chains that control shelf space, often paying for placement. A small firm seeking shelf space in national chains would face slotting fees and promotional demands it could not fund.
Pricing Behavior
Oligopolists recognize their interdependence. In our market, list prices of the leading brands move closely together, and competition takes the form of promotions, new scents and packaging rather than steady price cuts. When one leader cut prices two years ago, the others matched within weeks and the cut was reversed by the next season. That pattern fits the textbook's account of oligopoly, in which firms avoid price wars that would hurt all of them.
What Structure Means for Our Entry
A direct-to-consumer subscription sidesteps the shelf barrier: customers order online and receive refills by mail. It also differentiates on a dimension incumbents have been slow to match, less plastic, which appeals to a segment the large brands serve poorly. The risk is retaliation: a large firm could launch its own refill line and use its brand and scale to undercut us. Our defenses are speed, a loyal subscriber base and a design that makes our refills work only in our bottles, which raises customers' switching costs. Speed matters most: the first year is the window before a large firm judges the segment worth entering.
Conclusion
The household cleaner market is a concentrated oligopoly protected by advertising, scale and retailer relationships. A small entrant cannot win on the incumbents' terms, but a direct-to-consumer refill model avoids the shelf barrier and competes on a dimension the market has underserved.
References
Bain, J. S. (1956). Barriers to new competition: Their character and consequences in manufacturing industries. Harvard University Press.
Saros, D. E. (2020). Principles of political economy: A pluralistic approach to economic theory (3rd ed.). Valparaiso University.
U.S. Department of Justice & Federal Trade Commission. (2023). Merger guidelines. https://www.justice.gov/atr/2023-merger-guidelines
DBA 8020 Module 3 instructions, in plain terms
This written assignment covers firm and market structure. Expect to classify an industry's structure, measure concentration with tools such as the concentration ratio and the Herfindahl-Hirschman Index, analyze barriers to entry and pricing behavior, and explain what the structure means for a firm's strategy. Show your calculations and their sources, compare your results with published thresholds and draw on the textbook and classic research on industrial organization. Use real or carefully estimated market shares, cite their source and say which barrier matters most for the firm you are analyzing. Compute both concentration measures. Name the barrier that binds your entrant and say how the entry plan avoids or overcomes it. Compare your index with published thresholds.
Inside the DBA 8020 Module 3 example
The paper sets out the spectrum of market structures. A table lists market shares, and the text computes the four-firm ratio and the Herfindahl-Hirschman Index and compares it with federal guidelines. A section applies classic research on barriers to entry and identifies shelf access as the binding one. A section describes oligopoly pricing. A section explains how a direct-to-consumer model avoids the barrier and what risks remain, and the conclusion summarizes. An example of a price cut matched within weeks illustrates oligopoly pricing, and the entry section names the defenses the entrant will rely on. A table of shares supports both concentration measures. The analysis closes by naming switching costs as the entrant's defense against a large rival. Pricing patterns are tied to the textbook's account of oligopoly.
DBA 8020 Module 3 rubric: what earns full marks
The grade reflects correct classification and measurement of market structure, accurate analysis of barriers and pricing, application to a real strategy and doctoral-level writing. Papers that compute concentration and compare it with published thresholds show rigor. Identifying the barrier that matters most for a specific entrant demonstrates insight. Considering incumbents' likely retaliation shows strategic realism. A concrete example of pricing interdependence makes the oligopoly analysis convincing. Defenses against retaliation show strategic awareness. Comparing the index with the federal threshold shows precision. Naming one binding barrier, rather than listing many, shows judgment about what matters for this entrant. Tables keep the measures clear.
DBA 8020 Module 3 help: mistakes that cost marks
Students lose points by classifying markets without measuring concentration, by listing barriers in general terms or by ignoring how incumbents will respond. Others misstate the index's formula. Square each share and add them. Compare with published thresholds. Name the barrier that binds your firm. Plan for retaliation. Give an example of how firms in the market actually respond to one another's prices. Plan how a small entrant would respond if a market leader copied its refill design. Use published share estimates where possible. A free first sample on your own DBA-8020 market structure assignment is available on request. Explain how concentration figures translate into pricing behavior among the largest cleaner brands.
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DBA 8020 Module 3 questions, answered
Where can I find a free DBA 8020 Module 3 sample paper?
A market structure analysis of household cleaning products is in the assignment above.
What is the Herfindahl-Hirschman Index?
A concentration score: square every company's share in percent, then total the results; 1,618 for household cleaners.
What is a four-firm concentration ratio?
The combined market share of the four largest firms.
What are barriers to entry?
Advantages, such as scale, brand loyalty or control of distribution, that let incumbents earn profits without attracting new firms.
How do oligopolists usually compete?
Often through promotions, product changes and advertising rather than steady price cuts, because they recognize their interdependence.