Our panel considers the ACCC's Digital Platforms Inquiry, including the threat of criminal charges if the tech giants don't comply. Plus, did Kylie Jenner really wipe $1 billion off Snapchat's worth? And finally, some good news for a change. We look at a new initiative from the Guardian focusing on solutions to the world's most pressing problems.

With Arvind Hickman (AdNews), Rob Stott (Junkee Media), and Bhakthi Puvanenthiran (Crikey). Hosted by Olivia Rosenman.

Fourth Estate is produced by 2SER 107.3 in Sydney and broadcasted across Australia via the Community Radio Network.

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Can the ACCC take on Google and Facebook?