If you were to make a Venn diagram of amoral and illegal (including civil malfeasance) have a pretty large overlap. Eventually, the illegal part gets people (even CEOs) sued, fired and/or jailed, but the company might continue if it can afford to pay the legal bills.
> These big companies are applauded for being amoral because their stock prices go up.
I don't think any investors are applauding the mismanagement at Boeing. I suspect the leadership team there is checking to make sure their "golden parachute" isn't an anvil. Being amoral works for a while, but it is a very poor long term strategy.
> Boeing can replace their management and the company continues.
Society has decided that closing down large employers is a cure worse than the disease. Closing a misbehaving company sure seems like justice, but to the 43,000 people who depend on that company for a livelihood, and the communities, even small manufacturing towns that the amoral company is keeping alive, well, the network effects are serious. So the consequences are usually in the form of inflicting financial pain to the company, or directly enforcing consequences against the people who do illegal/tortuous things.