Earlier quoted context omitted.
I would be absolutely astounded if targeted ads did not provide significant long-term advantage to a big player like Google. How can it be that having intimate knowledge of someone would not allow you to sell them more stuff? John has a 10th wedding anniversary coming up. Mary is single and goes to the gym every day. Steve just got a promotion and likes the BMW 3 series. Michael is overweight but has just gone on a d…
I think this is just it though. Everyone assumes targeted advertising works, because it seems self-evident that it should. And the only people likely to have significant data on whether it works have a vested interest in convincing everyone that it does work (regardless of whether that's true or not). It may be that targeted ads are more effective, but some counters to your points: > John has a 10th wedding anniversa…
Combine this with marketers wanting to be more data-driven - and needing to report numbers to their own bosses - and you've got a situation ripe for exploitation. I expect the adtech companies could sell pretty much anything, as long as it smells like numbers.