Pre Pandemic it made financial & logical sense for the operator at LTN to trade a pax/airliner movement for & instead of a corporate Citation movement...
Airports such as LHR had been doing this for many years & even STN for the medium/ long term were viewing corporate movements as finite...
So in the light of restrictions the operators & airports including FAB & BQH embarked on large scale expansion of facilities the results of which are increasingly evident today...
With limited access to the R/W in terms of holding points & turnoffs & R/W length to maximize movements in comparison with say LHR/STN & notwithstanding noise quotas LTN was perhaps always to see a reduction in corporate traffic to enable the airlines...
LTN is caught in the here & now whilst having planned for a future that is for the foreseeable at least out of sight...
STN has been a net beneficiary of the BBJ type market from LTN to an extent but STN has also gained with the many Corporate & Governmental heavies denied access to LHR over the years...