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Retail media and how brands grow

June 29, 2026
Professor Jenni Romaniuk
Associate Director, Ehrenberg-Bass Institute

In this episode of The Retail Media Show, Steve Gray speaks to Professor Jenni Romaniuk, Associate Director of the Ehrenberg-Bass Institute, about how the Laws of Growth should shape retail media strategy and measurement.

Jenni brings decades of empirical marketing science to the discussion, focusing on how brands grow through penetration and explaining why mental availability and physical availability are more nuanced than simply advertising and distribution.

In this episode:
  • Why penetration remains a primary driver of long-term brand growth
  • What the Laws of Growth mean for retail media
  • The relationship between mental availability and physical availability
  • Why mental availability is not simply advertising
  • Why physical availability is more than distribution
  • How retail media can influence both mental and physical availability
  • What marketing science means for retail media strategy and measurement
About The Retail Media Show

The Retail Media Show is a weekly conversation with the people building, buying and shaping retail media. Hosted by Steve Gray, it brings together retailers, brands, agencies and technology leaders to explore what's changing, what's working and what comes next.

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About SG-retail

SG-retail helps retailers turn retail media ambition into practical, commercially effective propositions. We work with retail businesses to shape strategy, strengthen capability and create the operating models, propositions and partnerships needed to make retail media work in practice.Our focus is on building approaches that are commercially valuable, customer-led and sustainable — helping retailers move from opportunity to execution with greater clarity and confidence.

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