Ads are coming to iOS (heck, my iPad and Mac already have quite a bit peppered around) and Apple will earn even more money in the future from them.
I have an ethical line and it is my phone and computer are for my convenience, not a way to toss advertising toward me.
Go ahead Apple, test me. Ya almost lost me a year ago. And I am not alone in this, I think most of Apple’s user base would be quite intolerant of such a plan.
But you are probably one of a handful of people who would switch ecosystems over an ad for a business in Apple Maps.
Most people have significant amounts of lock-in impeding such a move.