you're absolutely right, they're not the same, at least not yet.

I still use firefox, because they still allow adblockers and also partly ideological reasons; i don't want there to just be one rendering engine that exists. But i'm not under any illusion that mozilla is not evil.

If we take Cory Doctorow's framework, they're still in the "be good to your users to get them to use you" or early in the "slightly enshitify to please your business clients" phase, and aren't nearly as far down as chromium is yet.