If ads were merely about being informative, they would be boring. But ads want to manipulate, so they have to be flashy and appeal to your emotions.
They pollute your mental headspace, and have no place in a healthy society.
Let's ban billboards. And then let's follow that up with a general purpose ban on paid advertisement.
Why do you think unregulated capitalism will solve the advertising problem? Other than what I am guessing your point is to relying on a large portion to punish bad advertisers and that eventually those companies will do boring adverts.
Clearly the average Joe/Jane is persuadable, and does not have an iron will to never be manipulated.
Clearly unrestrained advertisement is how we got here in the first place.