In part two of a series on the rise and power of the tech oligarchs, Sidney Blumenthal and Sean Wilentz interview Gil Duran, author of “The Nerd Reich: Silicon Valley Fascism and the War on Democracy,” on how Peter Thiel, Elon Musk, and the tech oligarchs came to power under Donald Trump, how they control key parts of his administration, and how they created JD Vance, made him vice president and plan to make him president.