Those are bad managers. I certainly have had these conversations and I left companies over their response until I found one that listened.

You have to try harder. You have to stop accepting short-sighted near term profit as "just how it is" or assuming that financial malpratice at scale is "good business", because if you do not and you don't keep trying, failure is inevitable. Corruption and corporate bailouts that take our tax revenue and cost us layoffs to pay for those mistakes are inevitable. Stop being complacent if you cannot accept putting in the effort to make what you know is right a reality.

I have been involved in those conversations at the highest levels in some of the largest companies in the world. More often than not I told them to either listen to the consulting that they PAID me for, or I will take my business somewhere else, and I did. If you don't suck at what you do then firing bad clients will not hurt you; in fact is it critical to your own growth in your career. You need to treat your employer as a client.