That's one way to deal with it, and in my analogy that would be equivalent to Substack banning ads within newsletters. But my point is that even where billboard

That's one way to deal with it, and in my analogy that would be equivalent to Substack banning ads within newsletters. But my point is that even where billboards are legal, most property owners choose not to install one. Why? It's because people are not money robots, and factor many other things into their decisions such as ethics, morals, personal preferences, cultural norms, etc. So, "ads make economic sense and are therefore inevitable" is a bad argument.