Social media companies have revoked access to about 4.7 million accounts identified as belonging to children in Australia since the country banned use of the platforms by those under 16, officials said. “We stared down everybody who said it couldn’t be done, some of the most powerful and rich companies in the world and their supporters,” communications minister Anika Wells told reporters on Friday. Recommended Stories list of 4 items list 1 of 4Meta starts blocking teens in Australia under social media ban list 2 of 4Australian PM & 12-year-old activist welcome social media ban list 3 of 4Could others...