It blocks some tracking, but is it a good content blocker? Last time I checked I still needed to install ublock or equivalent for acceptable performance. How hard it is to incorporate something an extension already provides?
Not hard at all, they could include uBlock add-on by default (as they did with Pocket) except allow people to disable it this time.
They do rely on Google's advertising revenue for multiple $100M of funding; so they presumably don't want to be too successful in democratising ad-blocking.
Eich used to be a controlling influence on FF (as Mozilla CEO), since he was ousted he heads Brave browser which includes content blocking by default (and a content revenue model).
In short perhaps FF/Mozilla are curtailed by financial considerations.
Not unless they buy uBlock first, which is what they did with Pocket. And unlike Pocket, which was already a company looking to get bought, uBlock is very much not that.
