That's why a consistent ad volume increase can't last, as it lowers the likelihood of software misidentifying ad sections (although there are many tricks used to identify ads, and obviously this won't affect filters which don't use volume as a heuristic).

If they want to beat statistical classifiers, what advertisers really need in the long run is for their ads to blend seamlessly into the show, and that really only works if they can match both the statistics of the soundtrack and the colour statistics of the video. That's pretty much hopeless for general purpose ads - they really would have to be built with a particular show (series) in mind, maybe have the same actors plug the products like in the 50s.

All the people I know use ad blockers, except me. I've been using a text browser (w3m) for years, and have never needed one.

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$E(X_t|F_s) = X_s,\quad t > s$