Crewmeal,
Re incentives for new airlines to start up;
All airlines operating new routes get hefty reductions for a number of years out of BHX, on a sliding scale.
Think you will find that most main airports such as MAN,EMA etc offer the same.
Easy Jet has always complained about low yield potential out of BHX.
However with the success of Belfast, Geneva and Grenoble out of BHX for them,lets hope they change their minds.
Nigel