It's not surprising either.
When people are doing illegal thing, each person who a part of this activity is important because it's all about trust. If one of them intentionally trying to cheat or backstabbing, they can't report to police because it's already illegal in the first place, everyone would get jailed. Hence they choose to punish using their own way, it's scary, but people choose money over safety right?
Thats cost them their lives. For the owner, he can just punish them without doing worse or killing them. The best he can do is fire them off their job or ask them for penalty regarding the violation they commited which is probably against the rule of the company. But killing them secretly its not a good punishment and even not allowed in the eyes og God. Yeah provided they make mistake but it doesnt allow you or anyone to do unhumane act.
The thing is, did they use their brain before creating an illegal activity? obviously not, hence they don't care with God in the first place.