The Revenant was an unlikely movie to become a worldwide phenomenon: a punishing, austere art film about a 19th-century trapper, with a nearly three- hour runtime, and almost no dialogue. The exacting vision of director Alejandro G. Irritu had caused its production to spin out of control, both financially and even physically, taking a terrible toll on stars Leonardo DiCaprio and Tom Hardy. Hollywood insiders predicted it would soon be a cautionary...