Re: Ads suck
Speaking as an ad industry lurker, I would say that the issue does lie with the algorithms currently though - the way these campaigns work in Google for example is that we bid on people who have abandoned or viewed (as well as converted) and then Google's algorithms decide which product is most relevant. I'm proud to say that I've never had one of our clients remarket towards me with something I've already bought, but have definitely noticed the trend of being pushed to by the things I've already bought online from the retailer I bought it from.
Similar principles include youtube ads that have no impression limit set so you keep getting bludgeoned by the same damn advert every damn time you try to watch a damn video. The tools are in place to solve the issue but aren't being used by agencies who want to spend to budget instead of generating value.