Please be clear what you're talking about. There's a difference between "service providing targeted advertising based off what it knows about you" and "service that sells data it has collected about you". The former wouldn't sell that data, because it's their most valuable asset.
I agree, this is a distinction without a difference, especially if your aim is to prevent influencing discussion and policies.
An ad targeted at "young democrats" and sending targeted emails to "young democrats" has the same effect (one could argue that the ad would be more effective since it's less easily filtered out)
