The key is to remember that most people who advocate business owners keeping most of the value of their employees' labor really believe that they are doing something good for society.
Sort of like natural selection, applied to human society.
Such people aren't, most of them, evil. They've just convinced themselves that greed is good.
On unfortunate by-product is that as you notice here, many of them regard low-wage employees as something less than fully human.
Correct. The operating assumption seems to be that poor people deserve their poverty, and that none of them wish to escape it. That's a foul kind of elitism.
Sidenote: I've noticed folks most star-struck and enamored by the rich are very often the ones with little by way of actual financial accomplishment. In other words, people with money know what a pain in the butt it is and are less than impressed by a billionaire. Big deal, in other words. Weird psychology at work here.