Answer:
The answer is: Steve has not only compromised his professional integrity, he has also violated the trust the owners placed on him during so many years. His reputation will be shattered if the owners find out about his dirty activities.
Step-by-step explanation:
What Steve just did is not only unethical buy also illegal. Of course he violated the trust placed in him by the owners. They thought they were friends and no one would expect his friend to betray them like this. He doesn't only risk his reputation if the owners find out, he risks going to jail. With his actions Steve has shown us he doesn´t have any moral integrity.