They call it “dark traffic” - ads that are not seen by tech-savvy users who have excellent ad blockers.
Not surprised that its growing. The web is unusable without an ad blocker and its only getting worse, and will continue to get worse every month.
Ads in the 90’s and 00’s would just layer toolbars onto your browser. Is still have a a nervous twitch when I see a thick toolbars or animated cursors.
The toolbars came from scam software on the '90s. Ads being able to install things came well into the '00s.
yeah, there was quite a long time where useful software was bundled with toolbars or, the worse option, malware that hijacked your browser, which was a pain in the ass to remove. I was the techie in the family, and i got pretty good with tools like hijackthis and knowing by heart what services and background programs should start on a standard win98 or xp installation. (in this time i also was THE guy to ask at my job when issues with 56k modems came up, diagnosing a lot of issues by listening to the dial-up tones)