As alter egos go, Augustus Caesar is not a bad one for Mark Zuckerberg, pontifex maximus of Meta, owner of the Facebook family of apps. Both men started their march to power as teenagers. Both stopped at nothing to build empires—though unlike the impetuous Mr Zuckerberg, Augustus’s motto was “make haste slowly”. Both gave the illusion of sharing power (Augustus with the Senate, Mr Zuckerberg with shareholders) while wielding it almost…