"gets their news from old media."

which extensively quotes Twitter and gets much of their leads and sources from Twitter.

I don't think the monopoly the previous user mentions implies you can't speak but it implies you can't be found. For instance if you don't show up on Google, yes you can tell your friends to visit your website but you can't tell everyone where your website is. If you get banned from one or more of these websites, it is like there is a town square and 99% of people are huddled in one side of the square and you are standing in the far corner where no one can hear you even if you shouted. Maybe you can tell your friend to go walk over to that side and tell people to come over to this side, but no one wants to come over to this side because they want their voices to be heard over where the rest of the town is having a conversation.