Chapter 10 Dynamics of Pricing Rivalry
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1 Chapter 10 Dynamics of Pricing Rivalry Prof. Jepsen ECO 610 Lecture 6 December 11, 2012 John Wiley and Sons
2 Outline Dynamic Pricing Rivalry How Market Structure Affects Sustainability of Coordinating Prices Facilitating Practices
3 Dynamic Price Competition Dynamic = over time (long run) Static = at a point in time (short run) Price competition can be viewed as a dynamic process Firm s decisions today will affect its future behavior as well as its competitors Dynamic competition can also occur in nonprice dimensions such as quality
4 Dynamic versus Static Models Dynamic models can capture aspects of real world competition that the static models cannot It is possible to incur short-term costs that are more than offset by long-term benefits (not captured in static models) It is also possible to see short-term profits (in a static model) followed by long-term negative effects
5 Cournot and Bertrand Models Cournot and Bertrand models are static rather than dynamic models These models look at one-time reaction to rival s move rather than all future opportunities and future behavior of the rival
6 Dynamic Model Scenarios Static models do not explain how firms can maintain prices above competitive levels without formal collusion In other situations, even a small number of firms are sufficient to produce intense price competition Dynamic models are useful in exploring such situations
7 Cooperative Pricing Firms would rather have their prices at monopoly levels than what is achieved under Cournot or Bertrand competition Explicit collusion to maintain prices at monopoly levels is illegal in most countries Cooperative pricing occurs if prices persist above competitive levels without cooperative behavior from the firms
8 Cooperative Pricing When rivals expect to play for many periods, there may be incentives against price competition If one firm lowers the price, its market share may go up in the short run When the rival retaliates, the market share is back to the original level and the price is lower making both firms worse off
9 Cooperative Pricing When there are a small number of sellers, each seller will recognize that the profit from price cutting will be short lived (Chamberlin) The equilibrium result is the same as if there was explicit collusion to hold the prices above competitive levels
10 Tit-for-Tat Strategy - Example Consider two firms Exxon and Shell Both firms currently charge $40, but monopoly price is $60 Prices change weekly Exxon tells Shell We will not be undersold Book shows how both firms benefit by raising prices to $60
11 Tit-for-Tat Strategy Tit-for-tat = each firm knows that its rival will match any price cut In this strategy, neither has an incentive to engage in price cutting When two firms compete over several periods, a tit-for-tat strategy may make cooperative pricing possible We will not be undersold! may mean higher prices through cooperative pricing
12 Tit-for-Tat Pricing with Many Firms Firm cooperates if benefits outweigh costs Benefits of cooperating are receiving a higher price (and presumably equal market share) than in competitive market Cost of cooperating is the one-time gain from refusal to cooperate Example is gain in market share from refusing to raise price
13 Coordination in Practice Firms likely to choose round number price points Equal splits of the market likely to be durable Coordination is easier with fewer products that are identical Example: Standard cycles for adjusting prices
14 Grim Trigger and Tit-for-Tat Grim trigger strategy is to lower price to marginal cost indefinitely in response to rival s price cutting in one period In tit-for-tat, the response lasts for only one period and future responses depend on future actions of the rival Both grim trigger and tit-for-tat are capable of sustaining cooperative pricing
15 The Superiority of Tit-for-Tat Tit-for-tat is easy to communicate: We will not be undersold Lowest price guaranteed Easy to describe and easy to understand Combines the properties of niceness, provocability, and forgiveness
16 Tit-for-Tat and Misreads When it is possible to misread rival s move, titfor-tat may not perform as well as more forgiving strategies A firm may be able to observe rival s list price but not the effective price A drop in the list price may be read as a price cut when effectively it may not be
17 Tit-for-Tat and Misreads A single misread will lead the firm to alternate between cooperative and non-cooperative moves Any additional misreads can make the pattern of moves even worse When there is a possibility of misreads, deferred response may be better than immediate response
18 Market Structure and Cooperative Pricing Market structure aspects that may affect how easy it is to achieve cooperative pricing: Concentration Conditions that affect reaction speeds and detection lags Relative structural conditions Asymmetries among firms Price sensitivity of buyers
19 Concentration and Cooperative Pricing Cooperative pricing is more likely to happen in a concentrated market than in a fragmented market Recall that as number of firms decreases, cooperative pricing is more likely to hold However, this logic fails when firms can target price reductions
20 Concentration and Cooperative Pricing In a concentrated industry, the typical firm gets a larger share of the benefits of higher prices The deviator s short-term gain is smaller since it started with a larger market share Thus, the more concentrated the market, the larger the benefits from cooperation and the smaller the costs of cooperation
21 Reaction Speed and Cooperative Pricing As the speed with which a firm can respond to the rival s moves increases, cooperative pricing becomes easier to sustain If the price cuts can be matched instantaneously, cooperative pricing can be maintained more easily
22 Determinants of Reaction Speed Lag in detecting price changes Frequency of interactions with the rival Ambiguity regarding which rival is cutting prices Inability to distinguish between price cuts by rivals and lower demand as the cause of drop in sales
23 Relevant Structural Conditions Lumpiness of orders Information availability regarding sales transaction The number of buyers Volatility of demand and cost conditions
24 Lumpiness of Orders When orders are lumpy, the frequency of competitive interactions is reduced Examples: Lumpy orders in airframe manufacturing, ship building Lag between orders makes the gain from price cutting more valuable relative to the cost imposed by rival s retaliation
25 Availability of Information about Sales Transactions Deviations from cooperative pricing is easier to detect when the transactions are public than when they are private Example: gasoline (petrol) sales Such deviations are harder to detect when the products are custom made for individual buyers than when they are standardized Example: automobile sales Complex transactions may make misreadings more likely compared with simple transactions
26 The Number of Buyers When firms set prices in secret, deviation from cooperative pricing is easier to detect if there are many small buyers than when there are a few large buyers With a large number of buyers, it is harder to do secret price cuts Hard to keep all price cuts secret
27 Volatility of Demand Price cutting is harder to detect when demand conditions are volatile Is change in market due to change in demand or change in competitor s behavior? When fixed costs are large, marginal cost declines rapidly with reduced output and monopoly price fluctuates a lot With large fixed costs, cooperative pricing is difficult
28 Asymmetries Among Firms and Coordination Problems When firms are not identical, cooperative pricing becomes more difficult Firms differ in the incentives they face for cooperative pricing due to: Different costs Different capacities Different product qualities
29 Effect of Buyer s Price Sensitivity Greater temptation to cut prices when buyers are very price sensitive Horizontal differentiation reduces buyers price sensitivity and deters price cutting
30 Practices that Facilitate Cooperative Pricing Firms can facilitate cooperative pricing by Price leadership Advance announcement of price changes Most favored customer clauses Uniform delivered pricing
31 Price Leadership The price leader in the industry announces price changes ahead of others and others match the leader s price The system of price leadership can break down if the leader does not retaliate if one of the follower firms defects
32 Advance Announcements of Price Changes Advance announcement reduces the uncertainty that the rival will undercut the firm Advance announcement also gives the firms time to roll back the changes if the rival deviates from cooperative pricing
33 Most Favored Customer Clauses Most favored customer clause allows the buyer to pay the lowest price charged by the seller While this clause appears to benefit the buyer (a price cut to any one customer lowers the price for the most favored customer), it also inhibits price competition
34 Uniform Delivered Pricing When transportation costs are significant, pricing could be either Uniform FOB pricing or Uniform delivered pricing With uniform delivered pricing, the response to price cutting can be targeted to customers in particular locations Deters defection from cooperative pricing
35 Quality Competition Competition can occur on quality dimensions such as performance and durability Quality competition can be less destructive than price competition Industry price elasticity should be low for industry wide price increases (to cover the cost of quality) to be tolerated
36 Quality and Price When customers are fully informed and are able to evaluate the quality of the products, the price per unit of quality will be the same for all products If customers are unable to evaluate quality A lemons market may emerge Free rider problem may lead to underinvestment in information gathering
37 Is Quality Really Free? If a firm is inefficient in its production, it can boost quality and reduce costs at the same time If a firm is already producing efficiently, quality improvements will entail additional cost
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