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Because it exposes products to customers who were otherwise unaware of their existence or features, not because advertising has special brainwashing powers.
I think there is an implied argument you are making that unless people vote the “correct” way, they’re misinformed. I think some people just have different priorities. They care about different things and for this reason, consume different media. I was horrified to learn my wife clicks on ads when she’s shopping. Apparently that works for her. It doesn’t mean she’s wrong. Just that she’s not as rigorous about her selection process because she’s ultimately happy with the outcome.
I personally wouldn’t make much of a distinction between “I remotely made a group of people do something they otherwise wouldn’t have done” and “I have special brainwashing powers”, but that’s beside the point. You can look into ‘persuasive technology’ if you’re interested in the current SOTA.
The more pertinent things in this context are the, as you put it, product’s “existence or features” - because their existence, quality or veracity of claimed features has no bearing on whether the advertising works. It just does. Convince others that you have the solution to their problem and they will buy it - whether it solves the problem or not. Or go for the good old industry tradition of creating your own market niche by manufacturing demand that previously didn’t exist: 1. Convince others that they have a problem and then 2. convince them to buy your solution to it.
We could make a distinction between terminal goals and instrumental goals (if you’re interested) but it’s not that important, for simplicity’s sake I can just agree with “different people having different priorities”. And while there’s a spectrum, there absolutely are incorrect purchase decisions. Products that don’t work, products that don’t exist, products that solve problems that you don’t have. You can see how this applies to advertising, political will and democratic elections?
I deliberately used the word “tricked” earlier, because I think “misinformed” still carries some connotation that there’s some onus on the informee here - there isn’t. The victim of a con artist is always just that, a victim.
That’s a very good point. I’ve often wondered that myself. We may have reached peak Linux already - it’s so hard to scale up massive FOSS projects without somehow sacrificing ideals on the way.