EP41 – Mark Williamson of Costco on the power of saying 'No'

EP41 – Mark Williamson of Costco on the power of saying 'No'

April 7, 2026 · 28 min

About this episode

Mark Williamson from Costco discusses the company's disciplined approach to retail media and its membership-first philosophy.

Retail Media Therapy Episode 41 Costco, Membership Models & the Future of Connected Commerce In this special episode, Viv Craske and Colin Lewis are joined by Mark Williamson (AVP Retail Media at Costco) to unpack how one of the world’s most disciplined retailers is approaching retail media – without compromising its core business model. From Costco’s iconic $1.50 hotdog to its membership-first philosophy, this episode explores how retail media can drive growth while staying true to brand principles. The conversation dives deep into sales velocity, data strategy, and Costco’s partnership with Symbiosis (now part of DoorDash) to enable a new kind of connected commerce search. Key Topics Covered: The Costco Model Explained Membership-first business model Low-margin, high-efficiency strategy focused on delivering value Ecosystem approach: retail + services The $1.50 hotdog as a symbol of customer commitment Retail Media, the Costco Way Retail media must serve member value first, not just ad revenue Built on strict guardrails and principles, not “quick wins” Transparency & data governance Privacy-first measurement Saying “no” to misaligned revenue opportunities is a strategic…

People in this episode

Hosts: Viv Craske, Colin Lewis

Guest: Mark Williamson

Topics covered

Keywords

Mentioned in this episode

Organizations: Costco, Symbiosis, DoorDash

More episodes of Retail Media Therapy

Explore listener stats, chart rankings, contacts and more on the Retail Media Therapy podcast page.