[yabadabadoes]

Yes, but AFAIK all these archives have nothing to do with their primary source, so while we might all prefer no ads there is no objective way to say marc.info is the authorative source over ad ridden sources.

With Wikipedia or stack overflow, I think whoever gets the majority of participants going forward and keeps activity high could start claiming authority in an objective enough sense, and engaged participants are more mindful of organization ethics than random searchers.