However do BRS have as many HUB airlines like we do?
BA, KLM, AF, LH, SN , UA and EK??
Could explain a part of it.
BRS has KLM to AMS (4 x daily); Brussels Airlines (op by bmi regional) to BRU (3 x daily); bmi regional with LH code share to FRA (3 x daily) and to MUC (2 x daily); Aer Lingus Regional (Stobart) to DUB (up to 3 x daily). Most are of lesser frequency at weekends.
AF pulled out of their CDG route a few years ago and Continental ceased Newark in 2010 after five and a half years.
BRS is too close to LHR for an air route to be viable, hence no BA.