Walmart’s Streaming Ad Marketplace Is a Trojan Horse for Small Business Budgets

Walmart just rolled out Connect Select, a so-called “streaming ad marketplace” that bundles connected TV inventory into its existing Demand-Side Platform (DSP), alongside search and display ads. The pitch? Small businesses finally get to play with the big boys in the CTV ad game. Sounds great until you remember this is Walmart we’re talking about — a retail behemoth with a vested interest in owning every inch of your ad spend.

Let’s call it what it is: Walmart is weaponizing its vast data trove and platform reach to lure small advertisers into a walled garden that’s anything but friendly. Connect Select isn’t some altruistic effort to democratize streaming ads; it’s a strategic power grab. By folding CTV inventory into its DSP, Walmart is effectively forcing brands to choose between its ecosystem and the fragmented chaos of true streaming marketplaces. Meanwhile, traditional players like The Trade Desk and Roku’s ad platforms watch nervously as the retail giant tightens its grip.

The real kicker? Walmart’s marketplace will almost certainly prioritize its own retail data signals, giving advertisers a veneer of precision targeting. But anyone who’s shipped scalable ad campaigns knows that “precision” often translates into opaque algorithms that obscure true performance. Small businesses will likely pay a premium for “exclusive” access to Walmart’s inventory, only to discover that this shiny new channel suffers from the same measurement problems and attribution black holes that plague the industry at large.

This launch also exposes the persistent laziness of ad agencies still hawking “10x growth” promises based on plugged-in DSPs without questioning where the inventory actually lives or if the targeting holds water. Walmart’s move is a reminder that the CTV ad space is still a wild west of inflated CPMs, poor transparency, and a cottage industry of consultants selling snake oil. If you’re a small business, don’t mistake Walmart’s Connect Select for a silver bullet — it’s just another gatekeeper with a shiny new lock.

Here’s the uncomfortable truth: If you want to survive and thrive in CTV advertising, you need to stop relying on these platform walled gardens. Fight for direct inventory access, demand transparency on data sources and measurement, and build your own attribution stack. Otherwise, you’re handing your budget to the next “marketplace” that promises democratization but delivers nothing but new fees and less control.