It doesn't have to be a malicious charlatan to pounce on value that has already been built, without them having actual consideration for future value that should be more rewarding and more sensibly worth working toward instead.

The corporate-climber-who-can't-build can often do this and nothing else, and they can sometimes even subconsciously exhibit some of the behaviors that end up with the same outcome, and it often can actually be unintentional.