"Big Tech's problem is Big, not Tech" by Cory Doctorow (video) https://archive.org/details/decentralizedwebsummitmedia-2018-courtyard-2?start=509
I missed this when it came out a few months ago, but this is a great talk. I'm becoming more and more convinced that the problems of technology centralization can't be solved without antitrust. Tim Wu's recent book "The Curse of Bigness" also comes to mind here.