It's a year-round job staying physically/mentally ready to compete for those 3 months. And unless they pick up their lives to leave their own countries to go play in foreign leagues in order to add to that $60,000, they really can't all find off-season jobs at companies that'll accommodate losing their employee for half the year.
$60,000 isn't giving young, single women a whole lot to sock away for later, especially if they want to buy a home.