The lack of ethics, like all selfishness, propagates inefficiencies into the greater society, as exemplified here for our overworked and underpaid teachers.
Our son has become quite a good chess player over the past 6ish years, during which online chess cheating via engines has proliferated. I explained to him that he is completely responsible for being able to honestly say, "No." in answer to the question, "Have you ever cheated in online (or over-the-board) chess?".
Having a decision matrix that leads to ethical action confers a specific peace that accompanies knowing that one has done nothing wrong. In a world full of liars and cheats, being honest is its own very special and quite rare power, looks to me.