He accused US President Donald Trump of wanting to create a 'mafia state'.
Soros said growth like that isn't sustainable because sooner or later the sites "will run out of people to convert".
Soros added that United States actions against the small Far East country "creates a strong incentive for North Korea to develop its nuclear capacity with all possible speed".
The only sensible strategy, given that no military action can prevent what has already happened, is to "come to terms with North Korea as a nuclear power".
Harsh as they were, Soros's criticisms of Trump weren't exactly surprising. George Soros isn't involved in the day-to-day management of that organization.
Leftist fearmongering about President Donald Trump literally destroying the world flared up again on Thursday, as liberal billionaire donor George Soros joined the Bulletin of the Atomic Scientists in predicting a Trump nuclear armageddon.
More unexpected was where Soros went next.
Soros isn't alone in this view: Rupert Murdoch recently said Facebook should pay a fee to trusted publishers in order to share their content on the platform.
"They claim they are merely distributing information", Soros said.
Soros suggested Facebook and Google should be subject to more stringent regulations which would "preserve competition, innovation, and fair and open universal access", as well as taxation, stating that those two factors will be the death knell for the companies. And their behavior was also causing larger social and political problems. "This can be very harmful, particularly to adolescents".
And with mounting public backlash, Facebook, Google and other tech companies may see their monopolies soon broken, as Soros noted European Union competition chief Margrethe Vestager "will be their nemesis".
Soros is the latest business leader to speak out against Facebook and call for more regulation of social media companies.
Soros also offered a stark warning that a future alliance between tech monopolies and authoritarian governments could bring together corporate and state-sponsored surveillance capabilities.
"This can result in a totalitarian control network like neither Aldous Huxley or George Orwell (two writers who reflected in their novels the effects of a futuristic totalitarian society) could have imagined", he added.
Soros predicted that Russian Federation and China were the two countries where "such unholy marriages are likely to occur first".