Completely agree with Wingowango.
Flybe have competed with EZY on Belfast routes to GLA/EDI/NCL and LGW for some time and haven't run off on these at all. Yes there is a difference in the airport served but the multiple frequencies offered by BE catch the eye of more business passengers and therefore allow BE to compete.
In fact, the market shares for Flybe appear to have held strong. Don't get me wrong, I'm sure BE would rather EZY weren't there but they have a good strong business model that works and i'm not so sure they'll be running off in a hurry and handing the routes over.