Earlier quoted context omitted.
Well, many believe that "big tech" (social networks and search engine, I'd say) have essentially replaced traditional news networks. I don't have a clear opinion on this yet, but if that's the case, it makes sense to regulate "big tech" in the same manner as traditional news.
Yes, and big tech should similarly be regulated like traditional telecommunications, where subscribers of telco A can call subscribers of telco B without problems (unlike most chat services).
Phone number interoperability was to establish an unbranded phone network that could be serviced by any telco. Making every service deliver messages to and from Facebook would be an absolute nightmare.