I remember ads 25 years ago would show new things constantly---usually for local companies as well, because TV and Newspaper advertisement was basically the only way to let people know that you opened a new store, or were doing a sale for XYZ products.

Those kind of advertisements are actionable, and the supplier wants to see metrics on how much impact a single advertisement had. In today's era, metrics are much easily found from online advertisement, and so businesses have gravitated to those, and most notably Google search ads.