The argument still stands - just replace TS with mom jeans. My point wasn't actually about Taylor Swift marketing - it was that demographic targeting is a reasonable way to identify an audience. Those mom jeans are not going to sell very well in a younger, urban demographic compared to Iowa.
More information here. https://freakonomics.com/podcast/advertising-part-2/
Nearly every company in the world does not fit that description, and I would bet that the vast majority of them would benefit from targeted advertising. One example being local stores targeted only to local people.
>TADELIS: Yes. So, for non-branded search, we actually had no idea what the results are going to be. Because here, if I am searching for, example, a studio microphone I’m sure that on eBay I might find a variety of used ones. But if I’m not thinking about eBay, and I just search for “studio microphone,” if eBay doesn’t pay an ad, they might not even show up on the first page. And by the way, the automated machines at eBay that were doing the online bidding, they had a basic library of close to 100 million different combinations of keywords, because eBay has practically everything you could imagine for sale on the site. So, we really had no idea what the returns for the non-branded searches would be.
>TADELIS: And we took a third of these D.M.A.’s, and we turned off all paid-search advertising. This was an extremely blunt experiment where we’re saying, “What would happen if we didn’t advertise at all?” And to our surprise the impact on average was pretty much zero.