I'm fascinated by this. It only goes to show that EI has been milking Irish passengers for years. In a relatively short period we've gone from 5 daily services (EI only) up to 13 daily (5 EI, 4 FR, 4 KL). If they're managing 98% LF... holy gods.
Context, the majority of passengers EI carried were transit to/from AMS, easily north of 70% at both ends. Nobody ever really catered for O&D.
FR's prices on the route have gone up significantly. I have flown 4 returns on the AMS-DUB route (3 FR, 1 EI). My FR return prices: €19.98, €19.98 and €30.60. Cheapest AMS-DUB-AMS return with FR now: €59.98.....
Indeed unlike DUB/BRU where fares are more less the same as when they launched and FR are retracting and EI are more less flat since FR launch.