^Since women usually stop working in Japan when they get married and from that moment on have the power over all the money the hubby earns, it does make sense. Arashi are probably getting most of their income from the salary men.
And wow, I just defended Arashi on the L charts thread. Yes, you've read it right - me as an Arashi-defender, wow! Seriously though, in which bubble are those people living? Or they are not interested in anything besides Ayu and then Arashis sales come as a big shock to them....(but it's not like this hasn't been happening for years now)