[waster]

Some people do, but most are worried they'll be blamed for either the fact that the problem exists in the first place (complainers, criticizers), for rocking the boat (whistleblowers, trouble-makers), or for fixing it wrong (stupid, careless). Our system, or many, for that matter, isn't set up to reward people who find and fix holes.

That all said, there are exceptions. But pettiness and self-centeredness can so often wreck it, or at least deter people from being bold enough to face judgment or possible error in order to do the right thing.