There's no audience like a captive audience! Do companies pursuing these increasing desperate ad streams really expect decent conversions from these, or is this

There's no audience like a captive audience! Do companies pursuing these increasing desperate ad streams really expect decent conversions from these, or is this for completely mindless companies like Wells Fargo blowing a billion fake dollars on celeb cameos for their credit card ads? (Also if you want a credit card with 2% cash back, why in the world would you look at Wells Fargo? Capital One will at least not empty your checking accounts with fees)