I am not sure that the "morality" argument re: adblock has anything to do with the "ad industry and its supporters." Rather, people generally speak in terms of the needs of websites who host ads and the harm done to them by adblocking. For the argument expressed here to have weight, we would have to go one step further and say that since websites who advertise necessarily dealt with the evil ad industry in hosting ads, they do not deserve the benefit of a moral argument now.

I am not prepared to view my favorite sites as evil because they attempted to exist.