Earlier quoted context omitted.
The assumption is that not many people would leave the room, close their eyes or mute the ads. If you created a painless, super easy way to remove all ads, i'm sure that TV channels will also find it hard to sell to advertisers, and thus, their revenue would decrease.
In my household growing up the ads were almost always muted as soon as the roll started. I always found it bizarre that other people did not do the same
It was very shocking to go from 75dB to an ambient 30dB or something like that out in the countryside. I'd have much preferred to talk over or zone out over the commercials without the suddenly shocking lack of auditory stimulus!