For some I’m sure that’s the case and would behave pretty remorselessly.
Others have a conscience.
Others still would engage in shitty behavior but probably destroy themselves pretty quickly dealing with the mental problems of doing what they know is shitty.
Be honest? Yeah, I’d do stuff I shouldn’t. But nothing I couldn’t sleep at night over. But one thing I know I’d do is find some way to bring down everyone fucking over regular people. Even if it’s as simple as stopping time, placing a recording device in a boardroom, and letting it record them plotting to fuck over whoever, and then retrieving it for public display.