There is evidence that Facebook and Google aren't competing all that hard, see for example https://www.nytimes.com/2021/01/17/technology/google-facebook-ad-deal

There is evidence that Facebook and Google aren't competing all that hard, see for example https://www.nytimes.com/2021/01/17/technology/google-facebook-ad-deal-antitrust.html https://www.nytimes.com/2021/01/17/technology/google-faceboo....