That is the sound of inevitability. It is the sound of creativity's death.
The studios primarily care about profits reaped with minimal risk. The glut of prequels, sequels, reboots, and adaptations is happening because those properties are already known among the population and have a built-in audience.
Consequently, original material gets shoved aside. Hollywood writers should be pissed because they're not being utilized to their fullest extent. At this rate, Avatar may be the last original property to originate in Hollywood.