How can creating a public service internet challenge the power of Google and Facebook?

Jeremy Corbyn, in the Alternative Mactaggart Lecture at the Edinburgh TV festival on Thursday 23 August, stressed the importance of policy innovations for strengthening the public sphere and driving back the power of the digital giants.
So, what could be done about it? The University of Westminster’s Communication and Media Research Institute recently published two policy reports 'The Online Advertising Tax as the Foundation of a Public Service Internet' and 'The Online Advertising Tax: A