> So you want the government to force private companies to continue doing business with someone they no longer wish to provide services to?

We do have a set of reasons you can't refuse service to people for (race, religion, etc), and if you get classified as a utility you generally have to serve everyone, so it's not exactly an exotic idea.

Some of these services are entering a more ambiguous state. Twitter and Facebook have official government communications flowing through them. Banning people may eventually have more serious consequences closer to the "having your water cut off" situation.