The title is: “the ad duopoly is under attack”. The term duopoly describes how the market is split: two companies make up the biggest chunk. The article provide

The title is: “the ad duopoly is under attack”. The term duopoly describes how the market is split: two companies make up the biggest chunk. The article provides no evidence that the market structure has changed. See my comment. A clickbait can be used by any publication. Apparently, including The Economist.