Retail Media’s Second Wave: What Happens When Quick Commerce Ad Inventory Runs Out of Growth Room

For three years, quick commerce has been the closest thing Indian advertising has had to a gold rush. Every brand with a trade budget and a nervous CMO wanted in, and every platform with a dark store and a delivery rider wanted to sell them a slot. Blinkit, Zepto, Instamart and their smaller cousins turned what used to be a logistics play into a media business almost overnight, and for a while, the arithmetic was irresistible. Impressions were cheap, intent was high, and the inventory kept expanding as fast as the warehouses did. That phase is ending. Not with a crash, but with something quieter and more consequential: the realisation that the inventory can only grow as fast as the app can be opened, and app opens are not infinite.

This is the second wave of retail media, and it looks nothing like the first. The first wave was about proving the model worked, showing brands that a banner on a grocery app at the moment of intent could outperform a banner anywhere else. That case has been made, repeatedly, and made well. The second wave is about what happens once every platform has made it, once every dark store has a screen, every search result has a sponsored slot, and every category page has been sliced into placements that a category manager can sell. At that point, the constraint stops being demand. It becomes supply.

The arithmetic that stopped working quietly

Quick commerce platforms built their ad businesses on a deceptively simple premise: monetise the moments of attention that already existed inside a functional, high-frequency app. Search result pages, category browsing, the checkout cart, even the notification that says your order is arriving in eight minutes, all of it became inventory. It was a smart move, because it didn’t require inventing new user behaviour, only pricing behaviour that was already happening. But that also meant the ceiling on inventory was set by usage patterns that platforms don’t fully control. There are only so many searches a person runs for detergent in a week, and stretching one search into three sponsored slots instead of one buys a platform some short-term yield, at the cost of a search experience that starts to feel like wading through a mall directory to find the exit.

Several media buyers who work across quick commerce platforms have quietly started describing the same phenomenon in different words: rate cards climbing, but conversion efficiency flattening. When the same eyeballs are being sold to more advertisers competing for fewer truly premium placements, the cost per acquisition creep isn’t a pricing problem the platform can fix with a new auction format. It’s an inventory ceiling problem, and inventory ceilings don’t respond to demand-side tinkering.

The first wave of quick commerce advertising sold attention that already existed. The second wave has to invent attention that doesn’t, and that is a fundamentally harder business to build.

What makes this moment different from a typical media cycle correction is that the platforms themselves are not short of ambition. If anything, the ambition has accelerated, because the unit economics of quick commerce delivery remain punishing, and advertising revenue is one of the few levers that converts almost entirely to margin. A platform that is losing money moving a bag of onions in nine minutes cannot afford to let its highest-margin business line plateau just because the checkout page has run out of room for one more banner.

Where the next inventory is actually coming from

The industry’s answer to a supply ceiling has, historically, always been the same: build a new surface. Retail media’s second wave is defined by three such surfaces, and each one changes what “quick commerce advertising” actually means.

The first is off-platform extension. Platforms are increasingly pushing their first-party purchase and intent data into programmatic exchanges and connected TV environments, effectively renting out the thing that made them valuable in the first place, the signal, rather than the screen. A brand can now target “recent detergent buyers on Blinkit” while that person is watching a cricket match on a smart TV, nowhere near the app itself. This turns quick commerce media businesses from walled gardens with finite slots into data companies with theoretically limitless reach, and it is the single biggest structural shift underway, because it decouples ad revenue growth from app usage growth for the first time.

The second is in-store and dark-store media, an idea that sounds contradictory until you consider that dark stores are, increasingly, not entirely dark. Some platforms are experimenting with digital signage, sampling programmes, and rider-facing placements that extend the media surface into the physical fulfilment chain itself. It’s early, and the economics are unproven, but it represents an acknowledgment that the browsable app surface has limits the physical network doesn’t.

The third, and arguably the most consequential for how brands plan spend, is the shift from placement-selling to outcome-selling. Instead of pricing a banner by impression, platforms are beginning to package media against guaranteed shelf visibility, share-of-search commitments, or even incrementality guarantees measured against a control group. This is retail media borrowing a page from performance marketing’s own maturation story, and it changes the negotiating table entirely. A brand isn’t buying a slot anymore; it’s buying a promise, and promises are priced very differently than pixels.

What this means for the brands writing the cheques

For marketers, the second wave demands a different kind of literacy than the first did. Wave one was about testing a new channel and proving it against a media mix model. Wave two requires understanding that the channel itself is now fragmenting into at least three distinct products, on-app placements, off-app data-driven extensions, and outcome-based packages, each with its own measurement logic and its own failure modes.

The temptation, especially for category teams under pressure to defend last year’s quick commerce ROI, is to keep buying the way they always have: search slots, category banners, a bit of homepage takeover around a launch. That’s a reasonable short-term posture, but it is starting to look like buying billboard space on a highway that’s about to be rerouted. The brands getting ahead of this shift are the ones treating their quick commerce media budgets less like a channel line item and more like a data partnership, asking not just “what did this banner return” but “what does this platform know about my category buyer that I can use everywhere else I advertise.”

There’s a governance question hiding inside that opportunity, too. As platforms push first-party signal into open exchanges, brands need to interrogate exactly how that data is being modelled, refreshed, and attributed, because a stale or poorly segmented audience sold as “recent high-intent buyers” is just an expensive guess wearing a data label. The platforms with the discipline to be transparent about data recency and match rates will separate themselves from the ones simply riding the retail media narrative for premium pricing.

The consolidation nobody is saying out loud

There is also a harder truth sitting underneath all of this, one that platforms are reluctant to say plainly but that media buyers increasingly whisper about in the same breath as pricing pressure: not every quick commerce player is going to build a retail media business worth the name. Building a genuine second-wave capability, off-platform data activation, measurable outcome guarantees, in-store media infrastructure, requires a scale of engineering, measurement rigour, and data science investment that only the largest two or three platforms can realistically fund. Everyone else will keep selling the same finite on-app inventory, competing on price, and watching yields erode exactly as the arithmetic above predicts.

That’s not a prediction of failure for the smaller players so much as a prediction of specialisation. The mid-tier and regional quick commerce apps may end up positioning themselves less as media platforms and more as fulfilment partners that plug into someone else’s advertising infrastructure, the way many independent retailers eventually plugged into Amazon’s or Flipkart’s ad stack rather than building their own. Retail media’s first wave rewarded anyone who showed up with inventory. Its second wave will reward the two or three players who can turn that inventory into something closer to an operating system for commerce data, and quietly sideline the rest.

The moment agencies and brands are actually in

None of this means quick commerce advertising is plateauing in importance, quite the opposite. It means the easy phase, where any presence on the platform delivered outsized returns simply because competition was thin and buyers were early, is closing. What replaces it is a more demanding, more strategic category of media planning, one where the winners will be the marketers who stop asking which platform has the best CPMs this quarter and start asking which platform is actually building durable data and measurement infrastructure that will still be valuable three years from now.

The platforms that figure out how to sell signal instead of just space, and the brands sharp enough to buy accordingly, are the ones who will define what retail media in India looks like once the novelty has fully worn off. Everyone else will still be fighting over search slot number four, wondering why the returns don’t feel like they used to.