Don't we have shopping carts for that? Never really understood the point of spending billions on ads only to show me products I already know about. Just feels l

Don't we have shopping carts for that? Never really understood the point of spending billions on ads only to show me products I already know about. Just feels like a waste of everybody's time. I am not even opposed to ads, but Internet ads always felt like missing the mark by a mile, be it showing products I have zero interest in, showing me the exact same product I just ordered, not even telling me the name of the product before the 5-sec-to-skip are over and so on. I don't think Internet ads ever showed me a single new product I would actually care about in the last 20 years. It's frankly baffling how far of the mark they generally are, even just showing me random stuff should have a far better hit rate. That's not to say all Internet ads are useless, reviews on Youtube make great product advertisements. But the classic Internet ads just don't do it for me.