A movie based on Biohazard just sounds like a very generic horror film. Spooky cabin in the woods, cool creatures but nothing super creative, an aping of the TCM family, just mostly things we've seen before.
The greatness of RE7 comes from how firmly implanted into the world you are by playing Ethan in a first person perspective. Take that away and put it all into a third person frame and you lose a lot of the magic.
It should be beyond easy to make a RE film. Spooky mansion. Special forces team. Zombies. Monsters. Third act science lab twist. Easy. But they keep mucking it up in just the worst ways imaginable. I didn't hate Welcome to Racoon City but it's attempt to cram multiple games together muddles it so much. At least it felt somewhat faithful in tone and style.
In it's own weird way, I'm kind of alright with having the adaptations we have and enjoying them for their own dumb quirks and unique takes. I'm fine if we don't ever get more straight 1 to 1 versions.