Comment by noisy_boy

Depends on the definition of the financial incentive. If it means bonus, then this doesn't handle cases of incompetence or malice, they will still get their salary. If that includes salary too e.g. financial penalties, then you'll get police doing things specifically to preserve their salary and instead of focusing on their core responsibilities.

Just carrots, whatever the definition, won't fix everything, there are assholes in every profession, you need sticks too.