I agree with your reversed statement. The company needs to be loyal to it's employees too. But in my opinion, some principles should not depend on how the othe

I agree with your reversed statement. The company needs to be loyal to it's employees too. But in my opinion, some principles should not depend on how the other side acts: "If my company is not loyal to me, it's my right to deceive them as well." -> No, I will stick to my principles. I might bring it up to management. I might quit. But I won't act destructively because the other side does. Otherwise it's a downwards spiral: you will meet many toxic people in your life. If you lower your standards everytime you do, at some point you will be one of them.