Exactly. The only privacy respecting feature I have ever worked on in the Ad space was because vendors (the ad industry clients) were abusing the platform and pushing expensive rich-media formats when only paying for "banners". So we prevented the banners from escaping the iframes they were served in and added measured APIs to allow richmedia ones to annoy the user outside the iframe.

it also had the benefit of cutting down spam since most spammers were scraping the webmail contacts by placing ads. lol. the early 2000s were wild.