The clear mantra is EZY is only going to serve places in which they can 'win'. They have publicly stated that Eastern Europe isn't one of those places - Scandinavia is certainly another (Wizz in EE, Norwegian in Scandinavia).
There is certainly not a 'win at any cost' mentality like Ryanair has - maybe a lack of ambition, or legacy issues to appease Sir Stelios?