Of course in some cases it ends up like that, but as someone who sees stats for a very big company in the IT world, re-targeting does work. I see a large number

Of course in some cases it ends up like that, but as someone who sees stats for a very big company in the IT world, re-targeting does work. I see a large number of metrics including ROAS (return on ad spend), and the false negatives are more than made up for by successful sale conversions.