Business Case Studies & Business Publications

What’s On the Shelf: A Field Observation...

Zhang, Zhihao

Exercise

What’s On the Shelf: A Field Observation Exercise on Competitive Positioning in Grocery Retail

Zhang, Zhihao

M-1087 | Published August 10, 2026 | 3 Pages Exercise

Collection: Darden School of Business

Product Details

Most students who shop at Trader Joe's, Whole Foods, or Costco have never asked why these stores look so different from each other, or what those differences reveal about competitive strategy. This exercise and its accompanying teaching note are built around that question.

Each student visits two stores before class: one assigned specialty grocer and a conventional full-service grocer as a shared class baseline. They arrive with their own field observations, their own hypotheses, and their own unanswered questions. No reading is assigned beforehand. The class session then builds from those raw observations through the economics of grocery retail to a full theoretical synthesis using the segmentation-targeting-positioning framework, the marketing mix, Porter's strategic fit, and Helmer's counter-positioning.

The teaching note provides a complete 75-to-80 minute Socratic discussion plan with six blocks and four progressive board plans, parallel guidance for MBA and undergraduate courses, benchmark data for instructor use, international adaptation guidance with specific store lineups for non-US markets, and a curated set of post-class materials distributed after the session to preserve the discovery structure the exercise depends on.

The package works in courses on marketing strategy, consumer behavior, retail management, and general business. It can be paired with the companion technical note, "Why Grocery Retail Works the Way It Does: An Economic and Strategic Primer” (UVA-M-1086), which provides the economic and conceptual scaffolding for students who want the full explanation behind what they observed in the field.

• Understand how segmentation and targeting are expressed in operational decisions—including assortment size, private-label share, pricing architecture, promotional mechanics, store layout, and staffing model—and connect these observations to the segmentation-targeting-positioning framework. • Understand the paradox of choice and be able to explain why a limited assortment is not a sacrifice for the customer but a psychological benefit: reducing cognitive load, increasing purchase confidence, and enabling genuine discovery. • Be able to articulate why some business models exemplify counter-positioning: a strategy whose durability comes from choices that competitors cannot profitably imitate without dismantling their existing business model. • Recognize the four P’s (product, price, place, and promotion) not as independent levers but as a mutually reinforcing system, and understand Porter’s strategic fit as the test of a coherent positioning. • Understand the resource-based view as it applies to the employee model: Compensation, rotation, and low turnover form a bundle of complementary assets causally linked to the private-label model’s viability. • Leave with a transferable skill: the ability to look at any commercial environment, ask what customer experience it embodies, and evaluate whether that experience is internally consistent.