Instacart (Maplebear) vs Walmart

Apoorva Mehta, a former Amazon engineer, recognized that grocery shopping was one of the last major consumer experiences that hadn't been "digitized." He built Instacart, a platform that used gig-economy workers to shop and deliver groceries from local stores. It solved the massive logistics hurdle of "item variability"—the fact that shoppers need to check for the freshest avocados and the right cereal, something an algorithm couldn't easily do from a central warehouse.

Instead of competing with grocery stores, Instacart made them its partners. By building a software layer that integrated directly into retailer inventory systems, Instacart allowed stores to offer a high-quality delivery experience without having to build their own logistics infrastructure. This "win-win" model allowed the company to scale rapidly, as it didn't have to deal with the high capital costs of owning grocery inventory.

The global pandemic made Instacart the most vital digital service in the country for millions of families. The company saw an unprecedented, massive surge in demand that forced it to rapidly scale its fleet of gig shoppers. This period transformed the company from a "convenience service" into an essential piece of American retail infrastructure, while simultaneously highlighting the extreme complexities of managing a gig-worker-led delivery force.

After its public listing, Instacart revealed that its most profitable business was not the delivery fees, but the "advertising engine" it built for CPG (Consumer Packaged Goods) companies. Brands paid Instacart for preferred placement on its search results, allowing the company to monetize the massive amount of consumer data it collected. This turned Instacart into a high-margin advertising giant, which fundamentally changed its business model.

By mid-2026, Instacart operates as the primary digital-enablement layer for the US grocery industry. It does not just deliver food; it provides the inventory management, advertising, and analytics infrastructure for thousands of retailers. By focusing on its high-margin advertising engine and technical partnerships, Instacart has solidified its role as a indispensable pillar of modern grocery retail.

Sam Walton bought a Ben Franklin variety store franchise in Newport, Arkansas in 1945 after returning from World War II. He grew the store's sales from $72,000 to $250,000 in three years. His landlord, recognising the store's success, refused to renew the lease and gave it to his son instead. Walton was forced to start over in a new town.

Sam Walton opened the first Walmart Discount City in Rogers, Arkansas on July 2, 1962. Walton's insight was geographic: he targeted small towns that other retailers ignored, where there was no competition. His pricing strategy was radical: he passed every possible saving on to customers, operating on margins that competitors considered impossibly thin. Walton believed that a smaller margin on a much higher volume would generate more profit than a higher margin on lower volume. He was right.

Sam Walton made a bet with his CFO in 1983: if the company achieved an 8% pre-tax profit, Walton would dance the hula on Wall Street. The company hit its target. Walton, then 65 years old, wore a grass skirt and danced the hula on Wall Street in front of television cameras. The story illustrated his management philosophy: celebrate success, keep employees engaged, and never take yourself too seriously. Walton drove a beat-up 1979 Ford pickup truck to his stores until his death in 1992.

Walmart became the largest retailer in the United States in 1990, surpassing Sears and Kmart. The company's logistics and distribution infrastructure gave Walmart cost advantages that competitors could not match. Walmart's information systems could track the sales of every product in every store in real time, allowing precise inventory management that reduced waste and ensured shelves were stocked. The technology investment was decades ahead of competitors.

Walmart reported revenues of approximately $648 billion for fiscal year 2024 — the largest revenue figure of any company in the world. Walmart employed approximately 2.1 million people in the United States, making it the largest private employer in the country. E-commerce, which had been Walmart's most persistently difficult challenge since the rise of Amazon, grew to represent approximately 15% of U.S. revenues — with Walmart's fulfillment centre network and curbside pickup model finally giving it a viable answer to Amazon's delivery capabilities. The man who had danced the hula on Wall Street in a grass skirt had built the largest commercial enterprise in human history.