I don't think that power corrupts absolutely only that the potential is there once at the top. We have all seen how some fellow employees change once they climb up the corporate food chain and they are accepted by another class. If you are already susceptible to be swayed, the lower oxygen level may possibly get to you.I like to think there are exceptions to the rule and that even some politicians remain steadfast in their search for justice, but I know from life experience everyone is affected: the only question is by how much.
My own company is a microcosm of society where the lower classes bow to the wisdom of a corporate leadership that I now readily see through. But we all need to learn through experience and realize by ourselves how the gears of society function and who truly merits our trust.