It seems like a symptom. Primarily because "wealth management" does seem to be a skill. So the expectation would be that even if you equalized all wealth tomorrow and suddenly educated everyone to the same level in it's management then in a very short time a large imbalance would again be created.

> but they aren't sure what it is or who to blame,

It's impossible to acknowledge that both of you are most likely equally wrong but just in different directions? If you worked together you'd get much further yet you can't even grant them basic personal agency. What a bummer. Inequality abounds.