Comment by specialist

Exactly.

How much of (online) advertising is legit? Does any one know?

What would a "healthy" ad ecosystem look like? What should the the FTC (and advertisers) be working towards?

Eliminate any potential conflicts of interest? Bust up vertical integration (eg search & ads must remain separate companies)? Independent verification, as best able (eg like Nielsen does for ratings)?

Or maybe we determine (digital) ads based biz models are irredeemable, and we figure something else out.