Cement Duopoly: Will the ₹250 Increase Stick?
Two cement producers dominate a regional market. At the prevailing price of ₹4,500 a tonne, annual demand is 1.2 million tonnes, split roughly 55% to Alpha, 35% to Bharat and 10% to long-term import contracts at ₹4,300 delivered. Alpha's plant runs at its 6.6 lakh tonne capacity; Bharat has 0.6 lakh tonnes of spare capacity out of 4.8 lakh. Marginal costs are about ₹3,100 for Alpha and ₹3,400 for Bharat. Regional demand elasticity is about −0.8.
Alpha announces a ₹250 a tonne increase to ₹4,750 from next quarter. Bharat's sales team immediately begins calling Alpha's dealers. Spot imports can be landed at ₹4,700 a tonne, up to 1.5 lakh tonnes a year. The two firms have matched each other's prices within a week for four years, and both belong to the regional manufacturers' association, where capacity and pricing intentions are discussed. The competition authority has recently opened a study of the sector.
1. Using the payoffs, predict whether Bharat will match the increase, and explain why the outcome is fragile.
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Baseline contributions. Alpha: (4,500 − 3,100) × 6.6 lakh t = ₹92.4 crore. Bharat: (4,500 − 3,400) × 4.2 lakh t = ₹46.2 crore.
Payoffs if Alpha raises to ₹4,750.
| Bharat matches (₹4,750) | Bharat holds (₹4,500) | |
|---|---|---|
| Alpha | Price 4,750; demand falls 5.6% × 0.8 = 4.4% to 11.47 lt; imports take 1.5 lt; Alpha ≈ 6.0 lt → ₹99.0 cr | Alpha ≈ 5.4 lt → ₹89.1 cr |
| Bharat | ≈ 3.97 lt × margin 1,350 → ₹53.6 cr | fills spare capacity, 4.8 lt × 1,100 → ₹52.8 cr |
Prediction. Bharat marginally prefers matching (₹53.6 cr vs ₹52.8 cr), but the gap is ₹0.8 crore on a ₹50 crore business - under 2%. Bharat is close to indifferent and its sales team is already calling Alpha's dealers. Matching is not assured.
Why the outcome is fragile.
- Bharat's spare capacity is the source of its temptation; if Alpha's price rise gives Bharat a chance to fill 0.6 lakh tonnes at a higher absolute margin, small changes in the numbers flip its choice.
- This is the kinked-demand pattern: rivals follow price cuts but not price rises, so a firm that raises price alone loses volume sharply while a firm that cuts gains little. Prices become sticky below the kink.
- The agreement is unenforceable and self-interested; each firm's dominant short-term move is to free-ride on the other's restraint.
- Alpha raising first reveals its intention before Bharat commits, giving Bharat the information it needs to undercut selectively.
2. Given the import constraint, what price should Alpha actually have announced, and what would break that calculation?
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Find the ceiling. Spot imports can be landed at ₹4,700/t and are available up to 1.5 lakh tonnes a year. Any sustained domestic price above ₹4,700 invites imports to undercut both producers; any price below it keeps them out. Import parity is therefore the real constraint on market power - a contestable-market ceiling rather than a cost ceiling.
Price at just below parity, say ₹4,680.
- Alpha margin = 4,680 − 3,100 = ₹1,580/t.
- Demand effect: +4.0% price → −3.2% volume → 11.6 lakh tonnes, imports stay at 1.0 lakh or less.
- Alpha retains roughly 6.5 lakh tonnes: contribution ≈ ₹102.7 crore, better than both ₹92.4 crore today and the fragile ₹99 crore in the ₹4,750 scenario.
- Bharat also gains, which is exactly why it will match: matching at ₹4,680 gives Bharat margin 1,280 on about 4.1 lakh tonnes ≈ ₹52.5 crore.
Why ₹4,750 is the wrong number. It is above import parity by ₹50, so Alpha hands volume to importers who can undercut it, while still relying on a rival's cooperation to hold price.
What would break the calculation.
- Freight costs falling, a new import terminal or a trade agreement - lowers parity and squeezes the achievable price.
- A demand contraction (construction slowdown) that makes Bharat's spare capacity worth more than its margin.
- Alpha's own capacity constraint: at full capacity the firm benefits from a higher price only if it can hold volume; if it must ration dealers anyway, the price rise costs less volume and a higher number becomes attractive.
- New domestic capacity or a third entrant converting the duopoly into a contestable market.
3. Assess the compliance and welfare implications of the announcement and the association discussions.
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The legal risk is not the parallel pricing; it is the communication. Competition law generally does not prohibit conscious parallelism - an oligopolist is allowed to watch a rival and respond. What it treats as evidence of an agreement is the plus factors: exchanging future price intentions, capacity plans or customer-level information through a trade association, and announcing a price rise well before it takes effect so rivals can follow.
On the facts, several plus factors are present:
- Public announcement of a specific future price increase with a start date, which has no commercial purpose other than coordinating expectations.
- Four years of near-simultaneous matching within a week.
- Association meetings at which capacity and pricing intentions are discussed.
Compliance advice. Stop discussing future prices, discounts, capacities or customer allocations at the association; limit it to technical standards, safety and taxation advocacy. Do not announce price increases in advance; implement them on the day. Document the independent commercial rationale - cost inflation, rupee depreciation, freight - because a cost-based justification is the most reliable defence.
Welfare loss. With price at ₹4,680 against marginal costs of ₹3,100–₹3,400, the mark-up is ₹1,280–₹1,580 a tonne on about 11.6 lakh tonnes. The deadweight loss is the triangle between price and marginal cost over the volume not transacted: roughly 0.5 × ₹1,400 × the 3.2% volume lost (≈37,000 t) ≈ ₹2.6 crore a year, before counting the transfer from consumers to producers. The antitrust concern is not that firms earn margins; it is that coordination, rather than competition, sets the margin.