Let's face it the days (and novelty) of flying off to discover the delights of a European city or have a weekend beach break for £20 with a loco are all but over. It was on this type of (IMO unsustainable in the long term) operations that airports like DSA expanded. The recession and hikes in APD have all but killed off this type of discretionary 'travel just because we can' travel. As a result, airlines are consolidating their ops and sadly airports like DSA, MME, BOH, NWI, PIK and to a lesser extent LPL are now feeling the pinch because of this. Not saying it's right but that is the way it is right now.
I am assuming the airline mentioned that LBA allegedly 'poached' was ZB?
Perhaps if DSA had 'poached' KL from HUY and persuaded BE to stay and develop their network from DSA things wouldn't be looking as bad.