I realize that you likely meant in home/on device, but in some places it already is.

Delta planes with in-seat screens play ads pre-takeoff, and you can't turn them off or mute them. (Or at least you couldn't when I last tried several years ago. That customer abuse was the last time I flew Delta.)

The other day I went to get gas and was subjected to in-pump ads that I couldn't turn off or mute.

It may not be coming to our televisions soon, but it's already there in many other places.