[alexdias]

An ad that is “relevant” to me is an ad that leads me to think “yes, this item is exactly what I was looking for”. Sometimes you know you want to buy something (let’s say a backpack) but you don’t know which brand/model to go for.

This is where ads come in: a backpack company can run ads that should be shown to people interested in buying backpacks, and it’s potentially a win-win: you find a cool item that you buy, and the company gets a new customer.

[GekkePrutser]

It's only really a win-win if the backpack was the best choice you could have made if you were fully informed about the entire market.

And that best choice is probably from the manufacturer that spends the most on making their product. Not the one spending the most on advertising. This undermines the win-win concept.