The company will eventually act in ways that serve to increase revenue. Thus, if your incentives are misaligned, the actions you take to increase revenue will be harmful to users.
One can dream up other forms of economies where the incentive would not be there. Some have already been discussed in great detail over the past couple centuries.
(It's like with what is said about early humans discovering agriculture. Settling down and growing crops led to worse health and less happy life than hunter-gathering, but still gave people competitive advantage over the societies that did not make the transition.)
A civil engineer can analyze a structure an say "based on dimensions, projected load, etc, etc this is likely to fail in these ways" and there are estimates, measurements and equations to back up the conclusion. More importantly, since they're based on physical principles, other civil engineers can repeat the analysis and should get the same conclusion.
But "good moral judgement" is an entirely subjective term. Whether you grew up atheist, Christian, Muslim, Jewish, agnostic, etc, etc or have a drive to improve the world or silence dissenting or harmful ideas or or or.. will have a major impact in what you consider, how you analyze, and therefore the conclusion you come to. And my conclusion - or even your conclusion a year from now - may not be the same.
Ethics and morality is not science and can't be reduced to a simple, repeatable equation.
I realize not everyone is in a position to take a stand, and some will argue others will inevitably step in to do the shady deed. Keep in mind bold actions of integrity will often inspire others.