It doesn't make any difference whether it's an individual, a corporation or a country - when it falls insolvent the best deal for creditors is always a workable deal and that means debt forgiveness, taking a haircut. If Joe owes you a million dollars but he can only repay it at a hundred dollars a month, you have no more hope of recouping your money than Joe has of paying it. Sometimes there is no deal. Companies go under, their assets sold for pennies on the dollar of value. Countries can go in all sorts of predictable and unpredictable ways.
Nobel laureate economist Paul Krugman writes that yesterday's No vote in Greece was a win not only for the Greek people but also for Europe itself.
...Europe’s self-styled technocrats are like medieval doctors who insisted on bleeding their patients — and when their treatment made the patients sicker, demanded even more bleeding. A “yes” vote in Greece would have condemned the country to years more of suffering under policies that haven’t worked and in fact, given the arithmetic, can’t work: austerity probably shrinks the economy faster than it reduces debt, so that all the suffering serves no purpose. The landslide victory of the “no” side offers at least a chance for an escape from this trap.
...In advance of the referendum, the European Central Bank cut off their access to additional funds, helping to precipitate panic and force the government to impose a bank holiday and capital controls. The central bank now faces an awkward choice: if it resumes normal financing it will as much as admit that the previous freeze was political, but if it doesn’t it will effectively force Greece into introducing a new currency.
...In the failed negotiations that led up to Sunday’s referendum, the central sticking point was Greece’s demand for permanent debt relief, to remove the cloud hanging over its economy. The troika — the institutions representing creditor interests — refused, even though we now know that one member of the troika, the International Monetary Fund, had concluded independently that Greece’s debt cannot be paid. But will they reconsider now that the attempt to drive the governing leftist coalition from office has failed?
...Unless Greece receives really major debt relief, and possibly even then, leaving the euro offers the only plausible escape route from its endless economic nightmare.
And let’s be clear: if Greece ends up leaving the euro, it won’t mean that the Greeks are bad Europeans. Greece’s debt problem reflected irresponsible lending as well as irresponsible borrowing, and in any case the Greeks have paid for their government’s sins many times over. If they can’t make a go of Europe’s common currency, it’s because that common currency offers no respite for countries in trouble. The important thing now is to do whatever it takes to end the bleeding.