As in, suppose your daily browsing generates about $3 of monthly ad revenue [0]. Instead, you have a (digital) wallet linked to your browser, which could be pre-loaded with credit each month. For each website you visit you may decide to opt-out of ads by paying a fraction of your credits.
You could even have a system where you could pay for a model with light-ads (i.e. at most 1 ad per page, 10 seconds of ads per 30min of video), or pay more for zero ads.
I understand it's a difficult system to organize and is dependent on a strong network. But I'd expect there to be a solid small market by now.
Lots of individual websites have this option (e.g. Netflix, newspapers, Spotify, Youtube Premium) but there's nothing overarching.
[0] https://thenextweb.com/news/heres-how-much-money-you-made-go...