Why Lithuanian airlines fail while Latvian and Estonian prosper

Despite years of lasting loss-making, Estonia's airline Estonian Air and Latvia's AirBaltic keep on flying passengers to different destinations all over the world. Smart management and support from the Latvian government allowed the latter to cross into the black. Meanwhile in Lithuania, a second airline in less than a decade was recently brought down by insolvency. Why did this happen, and does Lithuania need a national airline at all?