Google bought or built android to be the main mobile search engine. I understand for competitive reasons them being forced to give others a place in the search

Google bought or built android to be the main mobile search engine. I understand for competitive reasons them being forced to give others a place in the search selection but why the hell should they take themselves out or even be forced to sell Android. Google auctioning the search placement is fuck you to the search engines complaining about its monopoly if they think it's get an advantage by being the default search they should be willing to pay something for being 1 of the selection.