Who is "they"? Who apparently represents all global advertising interests, and also represents all who desire to censorship for any reason?
But since you go on about advertising, that is a way for groups that want it, is to be able to force people to listen to their message. This robs people of their agency to listen to what they choose to. Censorship also doesn't allow people to listen to what they choose to. This makes advertising and censorship very alike. They both result in a persons loss of freedom to choose what information they get.