The fact box office fell off from the first especially with the fact foreign box office grosses have continues to dramatically increase the past 3 years should be a obvious sign the interest is not there as much this go round.
PEGI ratings are weird. I just checked the back of the Alien: Isolation case. It's rated for violence and bad language, but not fear, somehow.. Most of those symbols never get used (I don't think I've ever seen a discrimination warning ever).
Fear is only used for games that are aimed at or likely to appeal to a younger audience. So while there's nothing objectionable to show to a kid (realistic violence, bad language, sex, etc), it might still be frightening to them, which parents might like to know.