Or that Chrome would actively work to block fingerprinting and trackers the way and blockers and Firefox do?

I think they'll do this.

Ok, so you mean most of what most companies get is fed from Google's tracking?

Today everyone installs cookies and what not and tracks however they can. Once Google goes the Firefox route disabling and mitigating tracking abilities in Chrome, the only gateway to tracking data will be the data gathered by Google via Chrome and exposed via some Google-controlled API to third parties. So I think that eventually what most companies get fed by will be Google's tracking.

So most would lose most of their data. But not that rely on Amazon/Meta/etc who are doing their own dirty work.

Yup. And probably.

So better than the status quo, unless you're a smaller ad company.