Well it's not my decision mate
Don't know much about TSF airport. Ofcourse there is room for multiple bases within 100 km's, that's not the point. The high fares at VRN is the problem and for Ryanair it's not worth basing aircraft there as BGY serves a part of the VRN market as well. It's even better, apparently not worth having any routes at all. Shame VRN has the high fares as it is a nice destination