Ireland
I perceive these expansion promises mostly as a kind of MOL's political manifesto ("reducing taxes is good for tourism, air travel, economy etc"). In general terms his attitude towards taxation is correct. Lower taxes are good for economy, albeit in that context the expansion will not necessary be good for his airline; the Irish "economic niche" is limited by size (of the country and its population) and the 4€ difference in taxation will not necessary have as obvious "boost potential" as Ryanair would like to prove.