You assume the “elites” want to stop it in the first place. History shows that fascism’s greatest supporters are the so-called elites. Whether it’s Hitler, Mussolini, Franco, Pinochet, excetera excetera, the elites practically fall over themselves to defend these monsters.
Why? Because they know that their status as elites is both artificial and precarious. Fascism promises to defend the system that gives them power and so they defend the fascists.
If Trump enacted all the same policies he is now but behaved more “respectable” in public, we wouldn’t hear a peep out of the elites.