Depending on how you look at it, she does: I'm salaried, and bring home a whole lot more than her (2.5x as much, this year, due to c-section and two surgeries), but she makes slightly more hourly (I count in lost overtime wages when comparing). I would love for her to make as much or more than me.
On the other hand, most women I've known use income as leverage within a marriage far more often than their husbands. Perhaps it's just the personalities of my friends/family and the women they marry, perhaps it's indicative of American Women in general; I'm in no position to postulate. But too often I've seen women with income equity use that equity to dictate how their money will be used (as per their wants, not needs).
In general, the people I know in the worst financial shape are those families with the women making equal or greater earning power. Though I would speculate that this is because neither party wants to relinquish control of "their" money, and no one person is responsible for the finances. It may be possible that when one person makes less (usually the woman, in our society), they are more willing to relinquish control of the finances to the person responsible for making the money in the first place.
In either case, my wife is so bad with finances that she could make 10x what I make and still trust (another important factor I didn't mention) me to successfully manage our money....