For years, the story was simple: Amazon would eventually do to groceries what it did to books, electronics, and everything else. The assumption was that scale, logistics, and Prime would inevitably overwhelm a slower, store-based incumbent.
That hasn’t happened. Instead, Amazon is now rebuilding large parts of its retail infrastructure to compete on Walmart’s terms, not its own. And the reason has very little to do with warehouses or delivery speed. It has everything to do with habit.
Groceries are the highest-frequency decision in retail
Groceries are the most frequent purchasing decision most households make.
Multiple times a week. Every week. Year after year.
The company that owns the grocery trip doesn’t just sell food. It becomes the default place for household spending, from paper towels to shampoo to seasonal items you didn’t plan to buy.
This is where Walmart has always been strongest. With roughly 90% of the U.S. population living within 10 miles of a store, Walmart didn’t need to win e-commerce to win retail. It already owned the most important habit loop in the business.
Amazon, for all its dominance in non-perishables and discretionary goods, never cracked that loop at scale.
Why Amazon’s infrastructure overhaul matters
The recent reporting about Amazon’s new “Supercenter” warehouses, its upstream “1DC” distribution layer, and micro-fulfillment centers inside Whole Foods Market stores isn’t about copying Walmart for nostalgia’s sake. It’s an acknowledgment that groceries behave differently than almost anything else Amazon sells.
Perishables demand proximity. They punish forecasting errors. They reward density. And they expose the limits of a fulfillment model optimized for shipping boxes long distances.
Amazon’s move toward sub-same-day grocery delivery, larger same-day facilities, and store-based fulfillment is an attempt to close the one gap Prime never solved: making the everyday shop feel effortless.
This is Amazon adapting to the category, not bending the category to Amazon.
Habit beats selection and speed
Amazon still wins on selection. It still wins on long-tail convenience. It still wins when the purchase is planned, delayed, or occasional.
Groceries aren’t any of those things.
They’re repetitive. They’re time-sensitive. And they’re deeply local. Walmart’s advantage isn’t that it’s cheaper or faster online. It’s that the grocery trip is already built into people’s routines.
That’s why Walmart has been able to layer same-day delivery on top of its stores so effectively. The digital order isn’t replacing the habit. It’s extending it.
Amazon is trying to create that same extension without having owned the original behavior.
Whole Foods as logistics, not lifestyle
Perhaps the clearest signal of Amazon’s shift is how it’s repositioning Whole Foods. Once treated as a premium brand and cultural signal, the chain is increasingly being used as physical infrastructure.
Micro-fulfillment centers in the back of stores turn Whole Foods locations into local distribution nodes. Shoppers can order Amazon-only items alongside groceries, consolidating trips and deliveries.
This mirrors Walmart’s store-fulfillment model almost exactly. Not because Walmart is cool again, but because it works.
Amazon isn’t trying to make Whole Foods bigger as a brand. It’s trying to make it useful as a habit anchor.
Mindshare over Margins
Grocery margins are thin. Everyone knows that. That’s not why Amazon is investing here.
The payoff isn’t in food profits. It’s in becoming the place consumers think of first when they need anything for the house. Groceries are the wedge because they reset the choice every few days.
If Amazon can win that behavior, everything else gets easier. If it can’t, Walmart’s position remains remarkably resilient, no matter how sophisticated Amazon’s logistics become.
The Streaming Wars Take
The most valuable asset isn’t the best website or the fastest shipping promise. It’s ownership of the most frequent habit in a consumer’s life. Walmart built its empire on that insight long before e-commerce existed. Amazon is now spending billions trying to earn it retroactively.
Whether Amazon succeeds will depend less on how advanced its warehouses become and more on whether it can insert itself into a routine Walmart has owned for decades.
In retail, habit compounds, and groceries are where that compounding starts. Quite literally. Vegetables have roots.
