I think that's right. I recently heard someone argue "Power doesn't corrupt, but rather it reveals who you really are." I think that applies to Walter White. He was morally corrupt from the start, but that became more obvious as he gained money/power.
I think it was Michael Irvin who said something similar when he was talking about how people say, "Money CAN buy you happiness." He said no, it just makes you more of what you already are.
If you're a huge asshole before you got rich, now you're just a rich asshole. If you're an empathetic, kind person, before you got rich, now you're just a rich, kind person. He also lamented society benefits more from the latter than the former for obvious reasons.
