“The central problem with Google’s search preference menu is that it is a pay-to-play auction in which only the highest bidders are on the menu. This auction format incentivizes bidders to bid what they can expect to profit per user selection. The long-term result is that the participating Google alternatives must give most of their preference menu profits to Google! Google’s auction further incentivizes search engines to be worse on privacy, to increase ads, and to not donate to good causes, because, if they do those things, then they could afford to bid higher. ”

Source : As Predicted, Google’s Search Preference Menu Eliminates DuckDuckGo