Step 2: "Secure" browsers change the behavior of their implementation of the Content Blocker API so an industry-accepted "secure" site lile Google Ads can opt-out of being blocked ("You wouldn't want a misconfigured content blocker to accidentally break a verified secure site right?")
Step 3: ??? (Force the users into a take it or leave it choice for whether they want to be part of the internet or not)
Step 4: Profit
Apple is just fine with collecting user data on platforms so long as they're the only ones doing it. Apple even runs its own ad network over its own app store.
As for revenue from Apple users, they already want to have control over that and would be more than happy if Google and co voluntarily stopped serving their users so they can make ad money off of them on their own terms.