You cannot get away from advertising, ever, in any society, in any financial system, at any point of time in history after tribal societie.
It's a concept that you can't just "ban", nearly all the problems we have with it today is because it's uncontrolled and abused. The concept itself though is as unbannable as the concept of "selling" something.
The concept:
"trying to find someone who can use something you made"
Is literally as old as humans moving away from tribal societies.
You can make the best thing in the world, but if no one knows about it, it's still useless.