It seems to me that the problem is entirely of the web advertiser’s making, though. When the web was new and novel, tracking was used to prove or validate specific ad spend. You can still do that sort of comparative analysis but now detection might have to live on and be limited to what can be detected from the advertiser’s own site. And if by the nature of the product or sale, it proves impossible to tell if I’m a human, well, that will be a shared cost or concern that all advertisers would have. If sites were forced to or mandated this new form of anti-tracking ad, advertisers would eventually go along with it because the alternative is not advertising on the large percentage of sites which have adopted it. This would probably make non-web ads and validated human email addresses more valuable unless they too are subject to the same anti-tracking provisions. An email service (or search service) by it’s nature offers more opportunities to tell if you’re human though, and such services would be inherently more profitable to advertise on... (see Facebook profits)

I don’t really see problems here outside of encouraging an entire industry to move on from tracking and/or DRM the way an entire nascent industry moved on from the popup and pop-under ad, or invasive screen takeover and annoying animated ads.