I don't see exactly what the threat here is. How am I being harmed by someone choosing to show me an ad for something relevant to my interests than something t

I don't see exactly what the threat here is. How am I being harmed by someone choosing to show me an ad for something relevant to my interests than something that's not? I'm not saying that I'm not being harmed, just that I don't see it. Are companies quoting me higher prices than if I was in the lowest-income bucket or hiding lower-cost alternatives?