Nexon, a Tokyo-based developer of video games, has taken a 38% stake in AGBO, a production company co-founded by the directors of Marvel’s “Avengers: Endgame,” Joe and Anthony Russo, reports The Wall Street Journal . Nexon is investing $400 million, with AGBO having the option to request $100 million more in the first half of 2022. The deal, which values AGBO at $1.1 billion, is the latest in...