lol its beyond obvious when Damien made this film he expected it to win "all the oscars". I haven't seen it but I agree with the poster that said it seems like it was made in a created in a lab from some scientist's best picture winner formula. There's nothing the academy loves more than films about hollywood lol. Add in the musical part for the unique gimmick, with 2 big, well liked stars stars and tribute to old hollywood it's like a checklist lol.
Add in that it's completely uncontroversial and inoffensive.