Apple most certainly makes money off of ads. It isn’t a major profit center but according to the following article it is on track to rake in $2B by next year. Also they make a nice cut of sales via app purchases an in-app purchases. They. Definitely want you using your device as regularly as possible to capitalize on that revenue opportunity. Their stance on privacy and security is a marketing angle capitalizing on the fear currently out there as a result of people awakening to how much of the web is monetized (I.e. with ads).
https://searchengineland.com/apple-search-ads-expected-to-ge...