When targeted ads means seeing nothing but ads for TVs for the next month after buying a new TV, I'm willing to take my chances with the untargeted model.
I would call those ads irrelevant ads, and that's a failure in ad targeting today. It's not like ad publishers enjoy wasting money serving impressions to you once you buy the product and fulfill the need.
For an example of irrelevant ads (minimally targeted), start reading your junk mail.