Both Lehman Brothers and Greece were denied a bailout.
Specifically the United States Government and the International Monetary Fund (IMF) refused to bailout Lehman Brothers and Greece, respectively.
Unfortunately close behind were/are lots of other troubled and unstoppable financial organizations and debt-ridden countries. [It is like trying to stop a bull run with your bare hands, oh yeah, and a red bandana.]
Countries like Italy, Portugal, Ireland, and Belgium all have public debt over 100 percent of their country’s GDP. Japan is over 200 percent. See the following for detailed statistics.
Unfortunately Greece had debt payments that looked like Mount Everest on a graph.
The US Government and the IMF have been strict with Lehman and Greece, respectively. Like the US Government, the IMF can be expected to panic with the next oncoming overwhelming group of debtors.
To learn more about the Lehman Brothers bankruptcy, read this.