Lying, cheating, and stealing is perfectly moral general practice, as long as the liar, cheater, or stealer doesn't get caught.
If one lies and no one knows, those who were deceived deserved the deception due to lack of discernment.
If one cheats and is not caught, the system has flaws and ought to be exploited.
If one steals without being identified as the culprit, then, like when cheating has no consequence, the system has flaws and should be exploited.
We should after-all only do what is best for ourselves.