Norwegian came a little late to the LCC European market, FR & EasyJet had already filled many of the routes between profitable city pairs and Norwegians costs were double that of FR.
They could make good money out of Scandinavia, but that alone would not give them the critical mass that they needed so they pushed on and profits fell and the rest is history.
Conversley they were an early mover in the long haul LCC sector and with over 30 Dreamliners in service have become a major player in that market as eviedenced by the changes having no effect on long haul.
The impact on the pilot baes in LPA/TFS will be hard for pilots that have made a life down there, they face either becoming commuters or leaving, many of the routes will still operate but the crews will be in hotels instead for the routes that can’t do there and back in a duty period, these will be Finland and Northern Norway.
The PVD/SWF bases in the US should have been closed a year ago, no one needed them, few if any of the US pilots recruited never got pass their final line check, you couldn’t even get to the PVD crew room without a local airport pass.
Will it be enough, well time will tell...