Historically, yes. The 30 or so years post-WWII was quite the anomaly. Never before in history had there been a time when a wife could stay home and not work. Previously, women always worked, in the family business, on feudal farms, in factories from the 1700's onward. Never before in history has their been a "middle" class, previously, there were only 2 classes, rich and poor (although the spread between these 2 classes was greater or lesser depending on the geographical area and historical period.)
Now, while we were all hopeful, the "middle" class was part of the progress of history and was here to stay, it seems like that is not going to happen. The best we can hope for, is that the spread between the rich and the poor won't be too great.