Restrictions on the internet: the power struggle for accessing information

I don't understand the claim. All editors "deplatofrm" everything they don't publish. Anyone in the world wealthy enough to possess a computer and a telecommunications account can stand up a webserver and give everyone in the world access with no more than a click to any information or opinion they wish to share. There is no aspect of the current power struggles over information and expression that hasn't been going on in some part of human society for the last thousand years except that radical democratization of the power to publish, which—despite the familiar oligopolization by the platforms and heavy-handed intrusions by state power—is absolutely new and remains potentially transformative. Surely whatever is to be said on the now-hackneyed side hyper-ventilating about "censorship" by the platforms should at least take that fact into account?