I mean, yeah.
Currently, the predominant business model for commercial search engines is advertising. The goals of the advertising business model do not always correspond to providing quality search to users. … For this type of reason and historical experience with other media [Bagdikian 83], we expect that advertising funded search engines will be inherently biased towards the advertisers and away from the needs of the consumers.
The Anatomy of a Large-Scale Hypertextual Web Search Engine
Sergey Brin and Lawrence Page, 1998