"You can control the people of the entire world with computers. Their socialization, their education, their culture, their employment, the very flow of money, all of it is controlled by computers. It's easier than ever and you don't even need to commit violence. The lash is no longer literal but economic."

This feels like it rests on a belief that "nudging" and subliminal messaging are actually effective. The evidence on that stuff is pretty weak, and the evidence we do find has small effect sizes.

The reality is more likely that the "online world" is insanely complex and hard to control. Even with a tech oligopoly, the number of players and interests groups in massive. If companies had the power to completely control the entire world and every aspect of life, they would have (assuming they had the incentive, which I'm sure you believe they do).