If MAN were to decide to price out the sub 100 seaters in the LGW manner then the passenger numbers would be considerably smaller.
Well no, the trick is to price out smaller operators and replace the same slots with bigger aircraft and so maximising throughput. There's no reason to drive out smaller oeprators if you can't replace the volumes. Gatwick has not blinked at the loss of Air Southwest or FlyBe as Norwegian and easyJet more than stepped up capacity to fill the gap, what was lost was certain, mainly domestic routes.