No teach them "if you bet your money on something, there is a chance of losing it". Step down from your high horse please.

Or teach your kids contract law, and make sure that they know how to comply and interpret them. Complying with a legal contract is not stealing. So learn how to write or negotiate the best contract for yourself is the only way to be moral in this world.

unconditional morals are the cause of every violent conflict in history.