Google pays Apple an estimated 9 to 12 billion dollars a year to be the default search engine in Safari.
https://searchengineland.com/report-google-to-pay-apple-9-bi...
https://searchengineland.com/report-google-to-pay-apple-9-bi...
Given Google's reach with their search engine, with YouTube, with Gmail, starting a war with Google would be a death sentence for a browser maker, no matter the supposed source of funding, which is basically ads across the board anyway, an industry also controlled by Google and Facebook.