Recognize the theoretical concern but one feature at least of STN`s new airlines is diversity & a measured approach by the airlines themselves.
Really does not deserve just to be on the STN thread as it was well known from Day One MAG were in expansive mode & the reasoning for acquiring STN.
BHX suffered/suffers the largest shake out perhaps with the demise of MON as it was never going to increase it`s traffic to accommodate an arriving/expansionist EXS up against & alongside the established incumbents.