If I, as a human, only make decisions that are in my best interest regardless of their harm on others, you would not call me amoral. You’d call me immoral. Why does this standard not apply to cooperations?
You can argue it's questionable from many perspectives – I can be a lot more unfiltered about this – but it tells you how specific of a context large American publicly traded companies work in. If that makes the idea of the large American publicly traded company problematic, that's a reasonable conclusion.
If we're going to draw an equivalency between the two, then we should also take care to recognize that corporations are sociopaths.