If, for example, an effective adblocking browser takes off, huge amounts of revenue to content providers will disappear. So content providers will start to resist in the only way they can - by blocking people with adblockers.

If you want to avoid either massive reduction of content, or the blocking of ad blockers, then you need to offer an alternative.

As I said, whether Brave's model is the right alternative is an open question - but at least they are having a go.