I too am sceptical the pure LCC model will work for extended long haul routes but I think it can definitely work for medium-haul (i.e. Western Europe to Eastern

I too am sceptical the pure LCC model will work for extended long haul routes but I think it can definitely work for medium-haul (i.e. Western Europe to Eastern/Central US). I think the legacy carriers will also have an easier time catching up to Norwegian's prices in the medium-haul space since the distances involved restrict how creative you can be to get costs down (compared to the short-haul market) i.e. there's a limit to how cheap Norwegian can make it.