Did you "really" read it? How much money do you think they make from bookmarks or recommendations?

You can make quite substantial sums, seeing as Mozilla makes tens of millions with default engine choices: https://static.mozilla.com/foundation/documents/mf-2006-audi...

So yes, I do think they make money aswell

I was going give Mozilla as an example, thanks for pointing that out. Now please go and check how Mozilla is doing financially :) Even Mozilla is having hard time making profit, Vivaldi is sure is an ambitious project but my point is sorts of income mentioned on the site doesn't mean anything, they need more than bookmarks...

Mozilla is BATHING in money.

https://assets.mozilla.net/annualreport/2019/mozilla-fdn-201...