It's not the ad industry that would suffer, but small businesses that buy ads. Targeted advertising is how new products and services can bootstrap themselves in

It's not the ad industry that would suffer, but small businesses that buy ads. Targeted advertising is how new products and services can bootstrap themselves into existence. As scale increases, targeting accuracy declines, so larger companies don't benefit as much. But if you want to put your product in front of 1000 people who will be highly likely to try it, targeted advertising is superb. If that goes away, it's the startup ecosystem that will be hardest hit.