2/4 - James Cridland once pointed out that premium subscribers don't see ads.
So the people who can afford not to see the ads are the very same people the advertisers want to reach and not the people who can't afford a subscription. #awkward
Furthermore TV, Radio and Podcasting use sample groups to extrapolate watching, listening and advertising results upon which future ad buyers base their decisions which is the same as Schrödinger's cat dilemma. e.g their very selection bias the results.