Mozilla could perfectly maintain its own store, or include ad / trackerblockers as a function in Firefox itself, as Vivaldi and others do. But Mozilla can only survive on the recurces and servers it uses at this level, because Google and Alphabet Inc finance them. They have made the deal with the devil and now they will have to deal with the consequences. Well of course they are forced to continue with this, because they have no other. It is not that I would not like an extensions store in common for all browsers, which will obviously have advantages for developers, but in view of who promotes it I have no doubt who is going to control it, precisely those who hate anything that them blocks ads, trackers and fingerprints. I have my doubts about it and in the end I will have to download the extensions to install them manually, from GitLab or Sourceforge, since GitHub is from Microsoft. ‘One ring to control them all.’