The Real Benefits (and Limits) of Retail Media Networks for CPG Brands

Retail media networks (RMNs) have become the shiny new toy in CPG advertising, promising unprecedented access to shopper data and closed-loop measurement.

While RMNs deliver on some of these promises, the reality is more nuanced than the marketing materials suggest.

Here's what we've learned about where retail media truly excels. And, where it falls short.

The Measurement Advantage: Finally, Real Impact Data

One of the biggest advantages of using retail media networks is the ability to measure real in-store impact. Unlike many upper-funnel channels, RMNs allow us to track conversions tied to actual purchases, not just clicks or impressions.

We can run holdout tests, measure lift in specific markets, and see how media affects store-level sales velocity. This gives brands a much stronger understanding of what's truly working at the point of sale.

According to industry data, CPG brands using targeted retail media see an average sales lift of 15-35% for promoted products: a direct and measurable return that's difficult to achieve through traditional advertising channels.

Closed-Loop Reporting That Actually Closes the Loop

The closed-loop measurement capabilities of retail media networks represent a genuine breakthrough in advertising accountability. Brands can track the entire customer journey from ad exposure to purchase within a single ecosystem, providing attribution accuracy that third-party measurement often struggles to deliver.

This transparency enables real-time optimization and budget reallocation based on actual performance data.

When a campaign shows measurable lift in sales velocity at the store level, brands can confidently increase investment. When it doesn't, they can pivot quickly rather than waiting for quarterly reviews.

Perfect for Distribution and Velocity Goals

If your goal is to grow distribution or increase turns, retail media provides the clearest line between advertising spend and real behavior at the shelf.

The high-intent nature of retail media audiences—people already shopping within a retailer's ecosystem—makes these platforms particularly effective for driving trial and repeat purchases among existing shoppers.

Brands launching new products or entering new categories find retail media especially valuable for building initial velocity and proving demand to buyers. The data generated from these campaigns becomes compelling evidence for distribution discussions.

The Awareness Problem: Premium CPMs, Limited Reach

Here's where retail media networks hit their ceiling: driving broad brand awareness. While RMNs can have large-scale data, they charge a premium for that data that can cut heavily into your working media dollars.

The CPM premiums on retail media networks often run 2-3x higher than comparable programmatic inventory, and the reach is inherently limited to each retailer's ecosystem.

This creates a fundamental math problem for awareness building, where you need broad, cost-efficient reach to drive meaningful brand growth.

The Fragmentation Challenge

If you're distributed broadly across many retailers, the best strategy usually isn't layering multiple RMNs. Instead, a broader reach strategy that drives sales across all retailers typically delivers better ROI for awareness objectives.

Managing campaigns across Walmart Connect, Amazon DSP, Kroger Precision Marketing, Instacart, and others creates operational complexity while fragmenting your message and budget.

Each platform has different capabilities, measurement approaches, and audience definitions, making unified campaign management nearly impossible.

Missing the Fundamental of Brand Growth

The fundamental of brand growth involves bringing in a large swath of light buyers, some medium buyers, and some heavy buyers. This requires reaching people who aren't currently shopping your category or visiting specific retailers regularly: exactly the opposite of retail media's core strength.

RMNs excel at converting existing category shoppers but struggle to expand the buyer base beyond current retail ecosystems. They haven't figured out how to cost-effectively reach the light buyers who represent the biggest growth opportunity for most CPG brands.

Strategic Positioning: Part of the Plan, Not the Whole Plan

We view RMNs as a tactic to use inside of a larger media plan rather than a standalone solution. The most successful CPG campaigns we've seen combine retail media's conversion strength with broader reach channels for awareness building.

The Integrated Approach

Smart brands use retail media networks to capture and convert demand created by upper-funnel activities.

TV, streaming, digital video, and programmatic display build awareness and consideration, while retail media converts that demand into actual purchases.

This integrated approach allows brands to optimize for both efficiency (retail media's strength) and effectiveness (broader media's strength). The key is maintaining proper budget allocation: typically 20-30% of digital budgets for retail media, with the majority still invested in reach-building channels.

When RMNs Make Most Sense

Retail media networks deliver the highest ROI for brands that:

• Have established distribution across major retail partners

• Operate in high-consideration categories where shoppers research before buying

• Need to drive velocity for specific SKUs or seasonal products

• Can commit meaningful budgets to individual retail partners

• Have sophisticated measurement capabilities to track cross-channel attribution

When to Look Elsewhere

RMNs are less effective for:

• New brands building initial awareness

• DTC-focused companies with limited retail presence

• Categories with low purchase consideration

• Campaigns focused primarily on brand building

• Brands with limited budgets that can't support premium CPMs

The Data Dependency Risk

While first-party retail data offers targeting precision, it also creates dependency risks that brands need to consider. Retailers control how customer data is defined, segmented, and made available, which can vary significantly between platforms.

Changes in data governance, privacy regulations, or retailer policies can impact campaign performance overnight. Brands that over-invest in retail media without diversifying their data strategy may find themselves vulnerable to platform changes beyond their control.

Making RMNs Work: Realistic Expectations

The key to retail media success lies in setting realistic expectations about what these platforms can and cannot accomplish. They're exceptional at bottom-funnel conversion but limited for awareness building. They provide precise targeting but at premium prices. They offer closed-loop measurement but within fragmented ecosystems.

Success requires treating retail media as one component of a diversified media strategy, not a silver bullet. Brands that understand these limitations while leveraging RMNs' genuine strengths: measurement accuracy, high-intent audiences, and conversion efficiency: will find them valuable additions to their media mix.

The retail media landscape will continue evolving as platforms expand their capabilities and improve cross-channel measurement. For now, the smart approach is strategic integration rather than wholesale adoption.

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Looking for a media agency to help you navigate the world of RMNs? Left Hand Agency offers specialized retail media expertise to help your brand grow. We'd love to connect and discuss your plans.

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Read More About the Benefits and Limits of Retail Media Networks for CPG Brands:

• Retail Media Networks: Benefits and Challenges for CPG Brands

• The State of Retail Media: Benefits and Limitations

• How Retail Media Networks Drive CPG Sales Growth

• Retail Media Measurement and Attribution Challenges

• CPG Brand Sales Lift from In-Store Digital Media

• First-Party Data Advantages in Retail Media

• Retail Media Network Targeting Capabilities

• Competition and Cost Trends in Retail Media

• Omnichannel Retail Media Strategies

• Retail Media Power Dynamics and Brand Relationships