Apple made $5B in ad revenue in 2022, which was double their ad revenue from the year before. Apple is already being devoured from within by ads. If you think Apple will never stoop to putting ads in the OS like Microsoft does, ask yourself: where are Apple users going to go to escape ads? Linux? No, they'll just deal with it and keep buying Macs and iPhones. Apple is not your friend, they are a company designed to make money at all costs, and they're not going to leave ad revenue on the table.
They did, repeatedly. They are the only one company offering deep e2e solutions that are absolutely incompatible with the data profiling needed to scale ads operations to Facebook or Google levels.
Also, where did you derive your figure from? Apple breaks down services, they don’t say how much they make with ads.
Even If that estimate was correct, Apple’s ad operation would still be a blip in comparison to the other players.
Apple is of course a corporation with one goal, making money. I trust the people of that corporation to be smart enough to know how to balance that and the ways it can be achieved. Bringing ads everywhere is not conducive to that, and it would probably make them less money in the long term. That means: it won’t happen.
I only have one request: know what you’re talking about before you talk about a company.