if Exeter, Plymouth, Newquay, Cardiff, Bristol and Southampton can support domestic services then Bournemouth should definately be able to. Why they always seem to lose out is beyond me - i think its just a case of bad luck and timing with inappropriate airlines - rather than viability or market demand. Bournemouth is the second largest city in the south west (after Bristol): it should be able to support core domestic routes.
'Long' list of past airlines that either went bust or never flew:
Euro Direct Airlines, Euroscot Express, Gill Airways, Dan Air, Jersey European, Aurigny, Southern Airways, Air Sarnia, Jet2, Air Berlin, Wizz, Flyglobespan,
'Short' list of successes: Ryanair, Palmair, easyJet, Thomsonfly