
Instacart’s reported sale talks deserve attention because a buyer could gain delivery demand, store software and advertising relationships together. No deal is agreed, and the company’s motive remains unknown. Elsewhere, two advertising studies expose a useful distinction: sales credited to a channel are not necessarily sales it created. That distinction matters before changing commissions or budgets.
News
1️⃣ Instacart’s reported sale talks could unite grocery demand, software and ads.
2️⃣ Brands want retail ads to prove they create extra sales.
3️⃣ German research asks which referral partners influence sales before the final click.
Insights
4️⃣ Retailers want AI agents to see products, but protect customer data.
5️⃣ Ecommerce attention still needs dependable delivery and customer service.
6️⃣ Meta’s US advertising money outpaces its share of adults’ social time.
LET’S ENTER THE MAZE!
1️⃣ News

The Maze: Instacart, the North American grocery-shopping platform, is reportedly exploring a sale. For grocery retailers, a sale could change who controls an important route to customers.

Source: Uber and Instacart. Official May 2024 app mockups show Instacart’s restaurant-order connection to Uber Eats. Prices and offers are historical examples, not current terms.
The Details:
The talks are early. Instacart reportedly hired an investment bank and discussed a sale with DoorDash, a restaurant and grocery delivery rival. Uber reportedly ended its talks. No deal is agreed.
More than deliveries could change hands. Instacart runs a shopping marketplace, powers retailers’ own online stores and sells advertising to brands. A buyer could gain several relationships with the same grocer.
A sale would not prove distress. Instacart reported US$1.043 billion in quarterly revenue, up 14%, and US$111 million in profit. Its board’s actual reason for considering a sale remains unknown.
MarketMaze Take: The retailer question is who controls access to shoppers. Combining delivery, store software and advertising under one owner could change negotiating alternatives, but no change to those terms has been announced.
Partnership is already an alternative. Uber Eats restaurant delivery has been offered through Instacart under a US partnership announced in 2024. Sharing customers need not mean shared ownership.
Retailers elsewhere face the same dependency question. Check which provider controls customer demand and store software. These reported US talks establish no worldwide deal or higher fees.
2️⃣ News

The Maze: A survey across six markets found brands want evidence that retail advertising creates extra sales before spending more. It measures stated priorities, not actual budget decisions.

Source: SMG. The original survey page lists its 281 respondents and three professional groups.
The Details:
Read the denominator. Of 161 brands answering an open investment question, about 74, or 46%, named measurable returns or extra sales. Researchers grouped each answer into one main theme.
Reports remain disconnected. The wider 281-person survey covered the UK, US, France, Germany, Spain and Australia. Only 14% always received unified reports across channels. Brands can struggle to compare different retailers' results.
Sales credited to ads are not necessarily caused by ads. Incremental sales are purchases that would not happen without advertising. A combined report does not establish that missing comparison.
MarketMaze Take: Retailers need both comparable reports and credible evidence of extra sales. Improving one does not automatically deliver the other—or guarantee more advertising money.
The lesson travels. Advertisers elsewhere face the same distinction between assigning sales to ads and proving impact. Advertising trade bodies’ guidance matches measurement strength to the decision; rigorous experiments also carry costs.
Keep the incentive visible. Research coauthor SMG sells retail-advertising services and software. The survey supplies a buyer signal, not proof its commercial solution works or a worldwide spending forecast.
3️⃣ News

The Maze: Germany’s digital-economy association, BVDW, wants retailers to evaluate affiliate partners beyond the final click. These websites and creators earn commissions for referring sales. Its October paper uses older data to propose a broader management view.
The Details:
Twice the recorded involvement. Across 185 advertisers, affiliates received final-click credit in 12.41% of transactions but appeared somewhere before purchase in 24.92%. Earlier reviews or recommendations can disappear from the final-click view.
Older evidence, new framework. BVDW published this comparison in June. The October paper proposes keeping final-click rules for commissions while using a second view of earlier contacts to judge partners.
Participation is not extra sales. The industry-supplied dataset does not establish which purchases would disappear without affiliates. The paper proposes control-group tests but reports no resulting sales uplift.
MarketMaze Take: A payment rule answers who gets a commission. A budget decision asks who changed a customer’s behaviour. Counting more contacts cannot settle both questions.
Investigate before reallocating. Earlier partners may deserve more credit, but the larger percentage alone does not justify doubling budgets. The paper does not identify the advertiser mix or say how far back it counted contacts.
Use the distinction elsewhere. Merchants outside Germany can separate commissions, recorded participation and tested additional sales. These German percentages are not a benchmark for their own customers.
4️⃣ Insight




The Maze: AI shopping agents find and compare products for shoppers. A BCG survey of 50 major global retailers shows how merchants plan to stay visible while protecting customer relationships.
Share the offer, protect the relationship. Some 86% share product descriptions with external agents or plan to within two years. Separately, 87% would never share customer or behavior data. One helps an assistant choose a product; the other helps the retailer understand its own shoppers.
Accurate data needs an operating system behind it. Two-year marketplace plans put better product data at 67% and current stock information at 58%, ahead of conversational search at 39%. Meanwhile, 63% plan personalized offers, but 33% plan systems that immediately choose a useful next offer or action. Keeping customer knowledge has value only if the retailer can use it.
Advertising plans still need evidence of results. Retail media means advertising sold by retailers. New agent advertising formats remain largely planned. Among retailers that launched enhancements, 65% report better campaigns, 55% more outside-seller demand and spending, and 40% higher media prices. These are shares reporting benefits, not percentage improvements. The subgroup size is undisclosed.
Why it matters: The practical priority is accurate offers, useful personalization and proof of extra sales. The survey records plans and reported benefits, not market-wide performance.
5️⃣ Insight



The Maze: Global ecommerce conversations show two connected challenges: getting noticed and making buying work. Visibility alone cannot tell a retailer whether shoppers receive a reliable service.
Amazon leads mentions, but the gap changes by channel. Its 120.8 million social mentions compare with Walmart.com's 8.6 million in August 2025–July 2026. Yet its AI visibility share was 19.3% versus 14% in Onclusive's separate August 3 test of GPT-5 and Perplexity. Mentions count references, not shoppers or sales; the AI test's prompts are undisclosed.
Social shopping earns the highest momentum score. Buying through social platforms scores 9 out of 10 in the category assessment, versus 4 for hybrid marketplaces that sell both their own stock and outside sellers' goods. These are publisher growth scores, not sales-growth percentages. Social commerce has little mainstream-media weight despite that higher score.
Delivery and service still need attention. Tracking transparency leads product-and-service discussion topics at 16.8%, ahead of delivery speed at 12.8%. Social-commerce experience leads a separate experience ranking at 13.9%. These are topic shares with undisclosed exact denominators, not complaint rates. The report describes missing parcel updates, weak recommendations and unclear routes to help.
Why it matters: Pair new channel tests with clear product information, useful tracking and a route to resolve problems. The report suggests where to investigate; your own orders must establish the commercial effect. Topic pages use July 2025–July 2026.
6️⃣ Insight

The Maze: Meta is forecast to take 76.1% of US social ad spending in 2026, versus 41.0% of adult social-media time. More advertising money does not prove better results.
Meta's share of advertising dollars exceeds its share of adults' minutes by 35.1 percentage points in the 2026 forecast. This is a difference between shares, not annual growth.
All other networks together account for a calculated 23.9% of spending and 59.0% of time. The individual shares for TikTok and other platforms are redacted; the combined remainder does not show which rival offers better value.
Meta includes Facebook, Instagram and Threads, excluding WhatsApp. A minute of use is not an ad impression or a sale, so the gap cannot establish whether Meta is overpriced or competitors are cheap.
Why it matters: For retailers anywhere, attention is a starting point for a test. Compare the extra profit each channel creates before moving budgets; these shares cover the US.
🧰 Resources
Useful stuff, handpicked by the team every day
🤖 AI prompts: 12 AI Prompts for Influencer & Creator Outreach or 👉 All here
📅 Events: Customer Service Summit 2027 or 👉 All here
🔓 Get the full resource library with MarketMaze+
🗞️ Quick hits
Everything else you should know
🛍️ Marketplace growth and retail economics
Debenhams Group lifted marketplace share to 38.9% of goods sold before returns, helping UK retail margins. Its £28.3m half-year pretax profit includes lease credits; excluding those credits still leaves about a £12m loss.
India's festive sales drew smaller-city shoppers into home upgrades: Flipkart reports 20–22% annual sale growth, while Amazon's category spikes compare with ordinary days. Those measures cannot establish which marketplace won.
Whatnot’s first national US campaign plans seller-led TV ads. Its separate 2027 Irish seller opening would let local businesses serve existing shoppers; detailed launch rules remain unannounced.
💳 Financing and retail advertising
Sam’s Club picks Affirm for eligible US purchases of $500 or more. The exclusive agreement starts online in coming weeks, with clubs planned for 2027; purchase approval and possible down payments limit access.
SPAR plans shared ad buying while country retailers keep data control. Its 13,500-plus stores in 50 markets describe potential scale; the announcement does not establish that all are connected.
🤖 AI performance and advertising rules
Apollo questions AI returns beyond seven US tech giants: sales per employee and margins are relatively flat across the other S&P 500 firms. That aggregate comparison cannot establish whether each AI project paid off.
Pennsylvania’s AI-ad law starts December 21: certain misleading AI images, video and audio need disclosures. Text-only content is exempt; a label does not erase other false-advertising liability.
THAT’S IT FOR TODAY!
You’re the reason our team spends hundreds of hours every week researching and writing this email.
What do you think of this issue?
See you next time in the maze!
MarketMaze team

