I think "training" is a misnomer, as its not actually the case the people doing shady stuff will change their moral compass based off of clicking through a few slides.

However, if the "training" includes explaining how employees breaking these rules will be held accountable and how it will affect their continued employment, it could influence behavior of potential bad actors.

I am unconvinced that any mandatory training is useful (ignoring the fact that the act of implementing the training itself is useful to the people who implement the training.)

Ethics and morals get in the way of increasing shareholder value.