Private-label grocery brands captured nearly 25% of total US grocery unit sales in the first half of 2026, according to Food Navigator. That means one in four items leaving a US grocery shelf now carries a store brand, not a national name. The shift continued a multi-year trend: unit volume for private label is growing faster than for branded manufacturers, even though national brands still command higher dollar sales per unit.
The mechanism is pricing. Store brands typically retail 15-30% below their national equivalents on the same shelf. When inflation pushes household budgets, shoppers trade down to the cheaper option that sits six inches to the left. The unit-volume gap widens because private label wins on frequency: a shopper who switches from Tide to the store's own detergent buys the same number of bottles, but the unit now counts in the private-label column. National brands hold dollar-sales leadership by selling at higher prices, but they lose the volume race.
This matters for physical-product brands in two directions. First, the private-label playbook is no longer limited to groceries. Retailers in apparel, home goods, pet supplies, and personal care are all expanding their own lines, applying the same price-anchor strategy. Second, the unit-volume metric reveals where the customer actually is: they want the function, not necessarily the logo. A brand that competes on logo alone is now competing with a retailer that owns the shelf, the data, and the margin structure.
The steal for a small physical-product brand is to think like a private-label operator before the retailer does it for you. Build your product to win on unit economics, not on brand tax. Price at the point where your per-unit margin works even if a retailer later launches a lower-priced alternative. Design packaging that communicates function and ingredient transparency in three seconds, the way store brands now do with bold type and clean layouts. If your edge is only the logo, a retailer will test a private version within eighteen months.
For brands already on shelf, the move is to decouple your value from price comparison. Add a feature the store brand cannot easily copy: a refill program, a subscription bundle, a sample pack that lets the customer try three variants at once. Partner with the retailer on exclusive SKUs that carry your brand but price closer to private label, protecting your unit volume while the retailer protects margin. The goal is to make your product harder to substitute, not harder to afford.
The broader pattern is that private label grows fastest when national brands leave a price gap wide enough for a retailer to walk through. Close that gap with utility, format, or access, and you keep the unit.