The manager takes up the problem that everyone is discussing, and no one does anything about it.
Manager turns this problem into a task and describes the process of solving it.
Manager hires other people to carry out the process described in the step above.
Manager introduces procedures for monitoring the performance (KPIs) of people that he hired in the previous step.
The manager controls those procedures. Quickly removes those who do not perform well according to KPIs, and hires new ones in their place.
You stop discussing the problem, since its gone.
Do you have good managers around you?