Mozilla gets a lot of money from its partnership with google. That’s why google search is the default on Firefox. Google probably wouldn’t want them to block all their ads.
I understand that but I do think it should be something Mozilla should offer, even if it’s a premium service only. The web should not be held hostage by AdTech imho, and as a non for profit Mozilla should be able to generate revenue (and before the Mozilla Corp people jump in, for operations and r&d) from essential services centered around online privacy (cloud storage, vpn, dns etc) with like minded 3rd parties.