That makes complete sense to me. Being involved in any sort of business where the underlying activity is criminal in nature means that contract disputes and even competition for market share have to be underwritten by violence and the willingness to resort to violence with no legal system to turn to for redress.

In the same way that being served with a lawsuit means likely to spending some time with lawyers or in court, a low-level criminal being shot indicates that his coworkers in the enterprise are likely to spend some time in shootouts.