Who is "we" in this sentence?
Apple doesn't have a ton of secret sauce that allows them to screw advertisers over and protect privacy. What they do have is money. Google sells advertisements. Advertisers are their customers and they give their customers what they want. Apple sells hardware that happens to come with pretty decent software.
The reason we don't have a truly open platform that solves this problem through similar technical means is... money. It costs a crap ton of money to design a great phone. It costs a crap ton more money to build the software for it. And there's really only two players in the game right now.