The attack was in Davos during a traditional annual dinner hosted at the World Economic Forum held in the Swiss Alps.
"They claim to be mere distributors of information," said George Soros. "The fact that they are semi-monopolistic distributors makes them public facilities and must be subject to tougher laws aimed at maintaining fair, open competition, innovation and global communication."
He predicted that technology giants would "involve themselves" in access to key markets such as China, creating "an alliance between authoritarian states and large IT monopolists with vast amounts of data."
"This could really cause an authoritarian network of control," he said. He predicted that governments would begin a tougher regulation of the sector. "Davos is a good place to announce that their days are numbered," he said