The Complete Economic Writing Guide | WYE Open Resources
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FULL GUIDE · ECONOMIC WRITING

How to write an economic commentary, paragraph by paragraph

Below, a single prompt — “Why do food-delivery platforms subsidize first and raise prices later?” — is taken from hook to conclusion. Each section states the principle, gives an exemplar, and adds annotations. The exemplar is instructional, with letters as placeholder numbers; your real writing must use verifiable data with cited sources.

PARAGRAPH 1 · THE HOOK

Bring the reader in through a concrete scene

Never open with a definition (“A two-sided market is…”); open with a phenomenon the reader has lived. Concrete numbers beat adjectives.

The same lunch cost ¥12 with coupons three years ago; today it costs ¥28. The vanishing subsidy is not the platform “turning bad” — it is a scripted pricing strategy arriving at its next act.
Annotation: The concrete numbers (¥12 → ¥28) create contrast; the final sentence introduces the economic lens and hints at the essay’s question without giving the answer.
PARAGRAPH 2 · PUZZLE & THESIS

Upgrade the phenomenon into a puzzle, then state the thesis in one sentence

A good thesis is specific, targeted, and refutable. After writing it, ask: how would a smart opponent attack this sentence? If there is no way to attack it, the thesis is too empty.

The real puzzle is not why prices rise, but why platforms willingly lose money for years. This essay argues: subsidies are an investment in network effects within a two-sided market; once users’ and merchants’ switching costs are high enough, the investment enters its payback phase — the timing of price increases is set by the competitive landscape, not by costs.
Annotation: First ask the right question (why accept losses), then give a testable judgment (timing set by competition, not costs). It names the mechanisms to come: two-sided markets, network effects, switching costs.
PARAGRAPH 3 · THE CORE CONCEPT

One concept explained thoroughly beats ten terms in passing

Judges award no points for term counts. Pick one or two concepts that genuinely drive the argument, explain how they work in everyday language, and connect them straight back to your case.

A delivery platform is a classic two-sided market: more riders and merchants improve the user experience; more users make merchants depend on the platform. That positive feedback is the network effect. It means the market tends towards winner-take-all — and that every yuan of early subsidy is paying for future pricing power.
Annotation: Mechanism first (positive feedback), then implication (winner-take-all → pricing power). No piling on of “marginal cost” or “price elasticity” irrelevant to the argument.
PARAGRAPH 4 · EVIDENCE

After citing, explain immediately what the evidence shows

The most common way to lose marks: pasting data without relating it to the thesis. After every number, answer — what does it show? How does it support my argument? A few pieces of well-explained evidence beat a long string of figures.

Take one platform’s public filings: from 2019–2021, subsidies were X% of revenue while market share rose from A% to B%; after subsidies contracted sharply in 2022, monthly user retention still held above C% (source: annual report, 2023). Users did not leave en masse when subsidies receded — switching costs had formed, and the investment in network effects began converting into pricing power.
Annotation: Every number is followed by “what it shows.” Note that X/A/B/C are placeholders: real writing must substitute genuine data with verifiable sources.
PARAGRAPH 5 · TRADE-OFFS & STAKEHOLDERS

Who benefits, who bears the cost

The paragraph that separates economic analysis from opinion writing: state the same event’s effects on different groups separately, avoiding holistic verdicts like “good/bad for the economy.”

The subsidy era’s winners are consumers and expansion-phase riders; the bill goes to platform investors and the traditional restaurants squeezed out by low prices. The price-rise era reverses it: the platform and retained merchants recover profits, while price-sensitive consumers and riders with weak bargaining power bear the adjustment. Policy debate that watches only “price rises hurt consumers” misses that subsidies distorted competition in the previous act.
Annotation: Two eras × four groups — one paragraph covers the distributional consequences and answers a popular but one-sided view in passing.
PARAGRAPH 6 · LIMITS & CONCLUSION

Draw the evidence’s boundaries yourself, then close back on the thesis

Admitting limits is not weakness: it tells judges you know what you know and what you do not. The conclusion echoes the opening scene without repeating it line by line.

This essay’s evidence comes mainly from public filings and a single market; it cannot rule out rival explanations like rising costs, nor establish strict causality. But the subsidize–lock-in–recoup mechanism yields a testable prediction: in markets where new competitors enter, price rises will be delayed. Back to that ¥28 lunch — what its price records is not cost, but how much trouble it is for you to switch platforms.
Annotation: The limits are specific (data sources, rival explanations, causal strength) and a testable prediction is offered; the final line hooks back to the opening, closing the loop.

Six checks before you submit

□ The thesis fits in one sentence and can be refuted
□ Every number is followed by “what it shows”
□ At least one strongest counterargument is seriously answered
□ Who benefits and who bears costs is stated clearly
□ Citations are complete and in APA 7th edition
□ AI and outside assistance are honestly disclosed
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