We are now twenty years into an uncontrolled social experiment, run by Silicon Valley, that has broken a great deal for the benefit of a few. While we can’t replace the leaders of this failed experiment—they have set themseves up as autocrats for life—there is no reason we should keep listening to them.

I believe Mr. Pichai and Mr. Zuckerberg are sincere in their personal commitment to privacy, just as I am sure that the CEOs of Exxon Mobil and Shell don’t want their children to live in a world of runaway global warming.