Edit: it would likely just cause a shift to self hosted ads, which is a dramatic improvement imo.
My guess is it'll result in backend web modules that make it easy to automatically dynamically re-host the same virus- and tracker-infested malware ads we all hate
This is a side-effect of media selling advertising through brokers rather than direct, that these brokers then built tools to track impressions, clicks and sales attributions, and then created a disparity between each level of several orders of magnitude.
When advertisers were paying an order of magnitude more for ad impressions, we needed far fewer ads and those ads tended both to be of higher quality and more topically relevant.
At the current CPM, I routinely get ads which aren't spelling or grammar-checked.
I don't think I've ever seen someone say this. People hate that they make the internet impossible to use. I have a family friend that runs a small business and all of the revenue comes from ads on the websites they run. I hate using their website because of the ads.
Pop-up that takes up the whole screen asking to subscribe, auto-play video ad, content moving as ads get loaded slowly. It's all just awful to use. The ads are absolutely effective though.