Superapps Threaten Instacart Leadership

The real risk is that Uber and DoorDash can treat grocery as an add on to habits they already own, while Instacart depends on winning the grocery trip itself. Both entered grocery in 2020 using courier networks and restaurant demand they already had, then reached about 5% share each by 2022. That lets them spread delivery labor and app traffic across meals, convenience, and grocery, which lowers the cost of acquiring each new grocery order and makes their apps more useful day to day.

• Instacart built around the weekly stock up mission, larger baskets, planned delivery windows, and retailer breadth. Uber and DoorDash can start from a dinner order, then pull users into late night snacks, forgotten milk, or a full grocery basket in the same app, which increases order frequency and keeps customers from opening a grocery only app.
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• The retailer lineup gap closed fast. Uber and DoorDash used their existing driver supply to get near parity with Instacart across major chains like Aldi and Sprouts, so competition is less about who has couriers and more about which app becomes the default place to buy everyday items.
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• This matters because online grocery is a thin margin business. Research on online grocery shows profitability depends heavily on basket size and order density. A platform that can bundle food, grocery, and convenience into one demand stream has more chances to raise utilization and absorb delivery costs than a single category marketplace.
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The market is moving toward a general purpose local commerce app. Instacart can stay strong where retailer integrations, ads, and store software make it hard to replace, but the center of gravity in consumer demand will keep shifting toward the app that handles the most purchase occasions in a single week, not just the biggest grocery run.