>…there are (video) ads for pyramid and other "get rich quick" schemes…
Oh my dog. Before I set up Invidious to ensure my experience on iPad and such could be ad free, the one that really shocked me is one of the two ads that would show up mid-roll for a creator I watched regularly was SIXTY SIX MINUTES in length. Yes, an hour and six minutes! I can’t imagine what that must cost, but clearly whatever they were selling must cover the costs of a 66-minute ad well enough!