On April 17, a federal judge affirmed what those in the digital media industry have known and argued for years: Google operates and maintains an illegal monopoly in the ad tech market.
In the 115-page decision, Judge Leonie Brinkema found that Google willfully acquired and maintained monopoly power in the publisher ad server market and the ad exchange market. The ruling states that Google unlawfully tied its publisher ad server and ad exchange, in violation of Sections 1 and 2 of the Sherman Act.
Judge Leonie Brinkema found that Google’s exclusionary conduct not only limited competitors’ ability to compete. In fact, it “substantially harmed Google’s publisher customers, the competitive process, and, ultimately, consumers of information on the open web.”
A brief history of ad tech
Advertising and publishing have always been intrinsically linked, with the former owing much of its initial success to the latter. The emergence of newspapers and other print publications allowed the advertising industry to solidify and grow, providing advertisers with a platform to place their content.
As both industries increasingly turned digital, programmatic advertising emerged, which automated the process of matching the available ad space publishers sought to sell, with the ads advertisers sought to place. In the milliseconds that it takes a user to open a website, a real-time bidding process takes place, in which the user’s impression is auctioned off to advertisers competing for available ad space to capture this impression.
These auctions are facilitated by ad exchanges, which “serve as the critical intermediary between advertisers’ ads and publishers’ inventory by facilitating real-time auctions in which advertisers can bid on inventory.” In order to manage and sell this inventory, publishers utilize publisher ad servers which “make it easier for publishers to place multiple sources of advertising demand in competition against each other.”
Ad exchanges, publisher ad servers, and other technologies make up what is commonly known as the “ad tech stack.”
Google currently operates the largest ad exchange, AdX, and the largest publisher ad server, DoubleClick for Publishers (DFP).
Google’s monopoly
In her ruling, Judge Brinkema found that both publisher ad servers and ad exchanges constitute distinct relevant product markets, and that Google possesses monopoly power in both markets. This conclusion was based on Google’s predominant share of both markets and high barriers to entry and expansion for competitors.
(Judge Brinkema also found that advertiser ad networks, another component of the ad tech stack, did not constitute a distinct relevant product market, as argued by the DOJ.)
In terms of the publisher ad server market, Google’s DFP held between 91% to 93.5% of the worldwide market from 2018 to 2022. This market share has been durable due to publishers’ ability to only use a single ad server for open-web display ads and the complex and resource intensive nature of attempting to build an ad server.
As a former Google executive stated, switching publisher ad servers “[t]akes an act of God to do” and is a “nightmare” because “[n]othing has such high switching costs.” In fact, even Meta, one of the world’s largest tech companies, shut down a project aiming to build an ad server “due to the significant barriers to gaining scale in a market dominated by Google.”
In terms of the ad exchange market, Google’s AdX holds a market share about nine times greater than that of its next-largest competitor while charging a higher “take-rate” per display transaction. The inability of competitors to constrain AdX’s pricing, despite charging nearly half what AdX does per transaction, directly points to its monopoly power in the market.
Google willfully maintained its monopoly power in both markets by tying DFP to AdX by imposing “technical and policy restrictions that prohibited publishers from receiving real-time bids from AdX (the tying product) unless they also used DFP (the tied product).” This tying forced customers to use a product they maybe would not have chosen otherwise and reduced the market share for rivals that could not compete on the merits.
How this monopoly impacts audience experiences
Although “search” is likely the concept people most closely correlate with Google, Google is fundamentally in the business of advertising. With the majority of its core services being offered at no financial cost to users, nearly 80% of the company’s revenues come from digital advertisements.
Due to its prevalence in search, browsing, email, mapping, file storage, word processing, translation, and video sharing, “Google arguably sits on the most valuable data asset in the world.” For years, this data asset, comprised of information from every action made on its properties, has been used by Google as a bargaining chip in its quest to control more of the advertising market that feeds its ever-growing gargantuan power.
The monetization of their websites is “crucial for publishers who wish to retain a greater degree of editorial independence.” As a result, the world’s most trusted publishers have been left with no realistic alternative in the publisher ad server and ad exchange markets as they continue to weather the storms of the digital landscape.
As publishers are forced to pay significant fees to Google and contend with policies that prevent them from securing the most value for their ad space, they are precluded from investing these resources in fostering their editorial operations and bettering the consumer experience. This means fewer articles from your favorite authors, fewer episodes of your favorite podcast, fewer detailed statistics on your favorite sports teams, all while Google uses your data to keep publishers captive to its products.
As Google and the DOJ now contend with the possible remedies to be imposed, consumers should remain engaged on this issue and be wary of arguments that Google’s monopoly is somehow beneficial to the average person. For too long, consumers and publishers have been on the losing side of Google’s control of the ad tech stack. Judge Brinkema’s decision points to a brighter and fairer future ahead.