Power is a double-edged sword. A lot depends on you how you handle it. Some add pride and arrogance to it. Some stay calm, empathetic.
Industry and capitalism celebrate assholes. They are the poster boys, omnipresent in media. But once they lose their power, most are lost in darkness.
We, humans, dwell on love, empathy, respect. Why do you have to treat someone the way you would like to be treated yourself?
Whether someone is doing sales, marketing, or customer support. At the end of the day, they are human. You have the power to treat them as you like.