I don't disagree with Nadella re the importance of defaults in setting habits, but at the same time: most Windows users rush to install Chrome over the default of Edge, so surely that says something? https://www.macrumors.com/2023/10/02/microsoft-ceo-on-apple-goole-search-deal/
(I will admit, I really don't get why people would voluntarily use Chrome, but it just goes to show what I know)