I mean even vaguely vaguely modern-style economy. And you know that's not the point. The point is there's a lot of things that are omnipresent but also not important to the economy.

> I think if you look at some early advertising (e.g. BCE), you'll see that most have a painfully obvious functional form of just simply announcing the existence of a product/service for the world to observe.

That doesn't tell us how important it is to have advertising.

And it doesn't tell us how important it is to have advertising anywhere near current levels.