>>211488855 (OP)The short explanation is the studio exects are all controll freaks. The idea is that using CGI let's them rewrite, edit, cut, or change almost anything in the movie, even a month before release. Using practical props, costumes, and sets locks them into that box, and they fucking hate that. Modern studios are taking this shit to such an insane extreme, that they will film half of a $100mil production before they even have a script.