Because most people have "mainstream" taste. True mashabiki to the genre know that B sinema are sinema that are zaidi times than not made FOR the fans. They are almost always my vipendwa over a lot of mainstream horror.
To be honest, I think those aren't true mashabiki of the genre. au they are people who just jump on the bandwagon when something gets popular. They like whatever the people around them like, because they want to be accepted.