There are certainly weird social issues that stem from the fact that women having more-or-less equality (pre-emptive: no whining), especially including the ability to not have kids, to work for equal pay and be a professional, to own property, etc etc, is very very recent (at least in western/euro-centric culture).
So you have these weird dynamics where men and women can easily do most of the same highly-paid work and earn the same, but women want to marry someone who makes at least as much or more than them.
Or where men and women can work the same kinds of jobs, but married women are expected to do more of the house chores and child rearing.
I think that'll more or less work itself out over some number of generations. It's impossible to go from a culture of single-earner households to double-earner households and not have friction over it.
As far as concentrating wealth goes, that's really up to you to decide if it's problematic or not. If every household simply doubles their income (people tend to marry within their classes, including economic), nobody who works for a living really gets ahead - prices rise to match the rising household incomes. The absolute number of dollars isn't interesting at all, because it's an arbitrary number. To look at wealth concentration, you should be looking at actual buying power, especially as it relates to necessities (whether that's food and clothes, or land and a home, or rights to mine or farm or otherwise extract raw materials, etc.)