No billionaire has a conscience. The very act of accumulating that much money and power demonstrates clearly their priorities and values. Anyone who isn't a glutton is eventually sated, but they're never sated.
It's a mistake to view the past behavior of billionaires as representing their true selves and their present behavior as deference or fear. To the contrary, they now feel safe to take off their masks and reveal the monsters underneath, because one of their own is in power.