They aren’t the only ones who have drifted into virtual spaces and wondered if it might be a rich landscape for a movie. In the “The Remarkable Life of Ibelin,” which debuted Friday on Netflix, director Benjamin Ree plunges into “World of Warcraft” to tell both the life and virtual life story of Mats Steen, a Norwegian gamer who died from Duchenne muscular dystrophy at age 25.