They aren't going to kill a guy for not earning. Even in the old days that would have been rare, but nowadays killing is something that is an absolute last resort for serious issues.
If a made guy runs a shy and it isn't very profitable for example, a captain will give it to another guy who has shown he can make money. It's a lot like business. Don't bring in the money and someone else will take your job.
Adolfo Bruno was killed I think for not kicking up enough back to NY (along with other reasons) and that the family thought a different guy would earn more.
