Ad blocking has become a safety issue. My parents are at an age where they fall for things. If a malicious ad pops up and offers to install McAfee, some other form of crapware, or outright scamware, they'll click that ad and install the thing. Then I'll get called over when the computer starts acting screwy. If Google, MS, etc. had ever gotten together and developed a way to filter malicious ads out of their own ad s…
Evidently whenever money and safety are opposed, money wins every time. Ad blocking is existential for Google. If everyone blocks ads, Google stops existing. They will do everything they can to prevent it, without going so far they stop existing for regulatory reasons either.
Now _that_ would be a killer feature.