Even if it is just a case of "reinforcing preexisting biases" (I don't think it is), I think it should be highly questionable when companies are spending money/

Even if it is just a case of "reinforcing preexisting biases" (I don't think it is), I think it should be highly questionable when companies are spending money/time to maintain those biases of the population. It's not like the vast majority of ads encourage some rational thinking about a product. It's just some content that someone is paying you to watch.