Because of the strong tendency to scapegoat the specific people named, drive them out of academia, and then celebrate victory while things continue in exactly the same way. (Ok, not exactly -- it improves for a while, people get sneakier, and then it continues in exactly the same way.)
Chipping off the tip of an iceberg isn't a good long term strategy.
Chipping off the tip of an iceberg isn't a good long term strategy.