I think the other thing with EZY on routes such as SEN-DUB is that they probably would not interline with any other airline, and O&D traffic may not have been enough to keep the route going. With BE, if I remember correctly, there was a temporary lapse of interlining with EI services, and that may have caused material damage to uptake. Also, the aforementioned theories that BE closed the route by stealth have a few factors supporting them.