That the cost of higher education is escalating is hardly news, least of all to families who borrow to pay for it. Less understood is that the relative ease of availability of college loans is a major reason for those rising costs - and resulting defaults. Late in January, FICO Labs, a San Jose, Calif.-based credit research company, released a report detailing a number of disturbing trends in the student lending industry. During 2005-12, the average outstanding loan balance rose by nearly 60 percent to over $27,000. And default rates were highest for recent originations. "This situation is simply unsustainable and we're already suffering the consequences," said FICO Labs analytics chief Andrew Jennings. Yet the Obama administration, in seeking to make college universal, may be fueling the problem to the point of inviting a bailout potentially rivaling that of home mortgages.