AFAIK, nobody has ever proven that those kinds of ads actually work, or at least they haven’t managed to attach a dollar value to the ads. But, everyone is afraid not to do it. Also, to a certain extent, advertising is also a prestige thing: you’re not doing it just for your (potential) customers, but also to flex on your competitors.
It’s subtle, or it might not be real at all.
AFAIK, nobody has ever proven that those kinds of ads actually work, or at least they haven’t managed to attach a dollar value to the ads. But, everyone is afraid not to do it. Also, to a certain extent, advertising is also a prestige thing: you’re not doing it just for your (potential) customers, but also to flex on your competitors.