Pretty sure suddenly coming into wealth does psychologically change a person regardless of their moral outlooks. For one, your priorities shift because you no longer need to materially struggle for survival, which in turn distances you socially and culturally from everyone else who does. Two, you have to start ethically justifying why you deserve to have that level of money in the first place, and those justifications almost always inevitably lead to prejudiced outcomes, because frankly there is no good reason for wealth disparity. To me, wealth is scary in that regard, so the fear would be in trying to find meaningful things to do with it after I've taken care of myself so that I'm less likely to fall prey to what seem like the inevitable psychological ramifications.
