Basically, the scoundrels don't trust other scoundrels. That's what's saving us from getting server-rendered first-party ads on most websites, that would make adblocking much more difficult.
Actually server side rendered ads would be a whole lot more acceptable to me compared to what we have today: less bloat, less risk of malware injection.
Personally, I could live with a some advertising if that is how it was served and it was slightly relevant.
When they want to try to track me around the web to see what technical and news sites I visit and then serve me ads for dating sites then I'll just turn on ny adblock again ;-)
What you're describing already happens. The only way to defeat that is with client-side mitigations like uBlock. DNS-level mitigations like Pi-Hole will stop the content from loading if the ads aren't loaded.
Personally, I could live with a some advertising if that is how it was served and it was slightly relevant.
When they want to try to track me around the web to see what technical and news sites I visit and then serve me ads for dating sites then I'll just turn on ny adblock again ;-)